Objective To establish a multiplex assay method for the simultaneous detection of FluA and FluB virus(IBV)antigen based on the flow cytometry(FCM)quantum dot-encoded bead technologies,laying the foundation for the assay of multiple respiratory virus biomarkers.Methods Coupling was performed for FluA and FluB nucleoprotein(NP)monoclonal antibodies using self-made quantum dot-encoded beads,separately.FCM was used to detect known concentrations of FluA and FluB antigens separately and simultaneously,optimize the detection conditions,and establish a joint detection method for FluA and FluB antigens.Compared with the quantitative real-time PCR(qPCR)method,clinical samples were used to evaluate the clinical performance of this joint detection method.Results The joint detection method for FluA and FluB antigens was established,with detection limits of 26.1 pg/ml and 10.7 pg/ml,respectively,and measurement ranges of 15.3～250 000 pg/ml.The joint detection method for clinical sample evaluation was well correlated with the qPCR,with a positive coincidence rate of 57.4%,a negative coincidence rate of 100%,and a total coincidence rate of 71.6%.In addition,the joint detection method was superior to colloidal gold immunochromatographic strip assay commonly used in clinical practice(positive coincidence rate of 56.49%,negative coincidence rate of 99.75%).Conclusion The FCM quantum dot-encoded bead multiplex assay can be used for the joint detection of FluA and FluB antigens,which have a high sensitivity,good specificity and wide detection range.It may lay a good foundation for the multiplex detection of common respiratory viruses,and has clinical application prospects.

Objective To investigate the relationship between the central foveal thickness(CFT),ellipsoid zone(EZ)interruption ratio and best corrected visual acuity(BCVA)in patients with idiopathic epiretinal membranes(iERM).Methods A retrospective case-control study was conducted.The cluster sampling method was used to select 336 iERM patients(500 eyes)who underwent physical examinations in 9 community hospitals of the Kailuan Group from 2014 to 2018.Among them,215 were male(64.0％)and 121 were female(36.0％),with an average age of 31-89(66.4±8.8)years.According to the gass classification,these patients were divided into three groups:gass 0 group(201 patients,305 eyes),gass 1 group(75 patients,101 eyes),and gass 2 group(60 patients,94 eyes).Pearson correlation analysis was used to evaluate the correlation between BCVA(converted to logMAR visual acuity)and gass classification,EZ interruption ratio,CFT.Results The average BCVA(logMAR)and CFT of 500 eyes were 0.45±0.28 and(337.6±101.8)μm,re-spectively,with EZ interruption in 86 eyes(17.2％).There were statistically significant differences in BCVA(logMAR)(0.62±0.29,0.48±0.23,0.26±0.32),CFT[(283.20±79.30)μm,(335.50±84.50)μm,(394.00±135.60)μm],and EZ interruption ratio(2.6％,20.8％,60.6％)among gass 0,gass 1 and gass 2 groups(all P＜0.05).Pearson correlation analysis showed that there was no correlation between age and BCVA among different groups(r2=0.021,P=0.314);BCVA was positively correlated with CFT(r2=0.531,P=0.000),EZ interruption ratio(r2=0.304,P=0.000),and gass classification(r2=0.587,P=0.000).Conclusion The EZ interruption may occur in the early stage of iERM.BCVA is correlated with CFT,EZ interruption ratio and gass classification;the incidence of EZ interruption in gass 2 iERM signifi-cantly increases.

Due to the serious shortage of corneal donor, the development of penetrating keratoplasty and corneal endothelial transplantation is severely restricted in clinical practice.The root cause is the limited proliferation capacity of healthy corneal endothelial cells.With the continuous development of tissue engineering technology and cell engineering technology, the research of tissue-engineered cornea has made some progress. In vitro culture of corneal endothelial cells with high density and healthy endothelial function for transplantation is a hot topic in current tissue engineering research.The keys of tissue-engineered corneal endothelial technology include seed cells, vector materials and the strategy of cell transplantation.At present, many research teams domestic and abroad have reported that the source of seed cells includes human corneal endothelial cells, stem cells, vascular endothelial cells and human amniotic epithelial cells.Vector materials include amniotic membrane, acellular corneal stroma, posterior elastic layer, anterior capsular membrane and various biomaterials.The cultured cells are transplanted by penetrating keratoplasty, corneal endothelial transplantation or anterior chamber injection.This review summarized the latest progress in the research on the source of corneal endothelial seed cells, the selection of vectors and the methods of corneal endothelial transplantation, and summed up the problems faced in the current research and looked forward to its prospects.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.

Attracting overseas medical consumption is the driving force behind the development of the medical industry in China's current"dual circulation"new development pattern.The progress of domestic medical technology and the improvement of service quality,the development of the economy and society,the enhancement of residents'health awareness,the increase of government investment in the health field,the advantages of the medical market and price competition,the guidance and support of government policies,international medical exchanges and cooperation,and the improvement of the medical insurance system are the main driving factors for attracting overseas medical consumption.Improving the level of medical technology,stimulating the vitality of attracting medical consumption,increasing the supply of medical consumption,unleashing the potential of attracting medical consumption,improving the quality of medical services,building support for attracting medical consumption to return,optimizing the medical consumption environment,creating an atmosphere for attracting medical consumption,and regulating overseas medical consumption,injecting the momentum of attracting medical consumption to return are the main implementation ways to attract overseas medical consumption to return.