The reduced and total vitamic C contents in 40 kinds of vegetables and melons and 18 kinds of fruits were measured. Their variations in different seasons were also investigated.The results showed that, many vegetables and melons were rich in vitamin C in different seasons, such as Chinese cabbage, shallot, spinach, chives in spring, cabbage, spinach, radish, sweetbell greenpepper in summer and chili greenpepper, cabbage, spinach, Chinese cabbage, potato, Chinese potato, turnips, etc. in autumn and winter.The contents of vitamin C in some vegetables and fruits are similar to those listed in "The Composition Table of Food" edited by Institute of Health, Chinese Academy of Medical Science, Beijing.The content of vitamin C of some species varies with seasons, which in general, is higher in autumn than in winter, and much will be lost during the storage period prior to next spring.There is a wide difference among various kinds of fruits. Jujubes are the richest, then the hawthorns and oranges, while some others are very low.Some vegetables have been subjected to blanching before freezing. The contents of reduced and total vitamin C preserved for 2-3 months' in a cold storage were reduced to 4.6-58.4% or 48.2-66.0% of their original contents.

T lymphocyte subpopulation and level of soluble interleuckin 2 receptor in peripheral bloodand serum of primary hepatocellular carcinoma and donor were tested.The results show that de-crease of T lymphocyte subpopulations is related with increase of level of soluble interleuckin2 re-ceptor in patients with primary hepatocellular carcinoma.

Objective To investigate the effectiveness of predicting the incidence of supine hy-potension syndrome (SHS)after spinal anesthesia measured by ultrasonic measurement of the varia-tion of brachial artery peak velocity in different positions of parturient.Methods Parturient scheduled for elective cesarean section,ASA physical status Ⅰ or Ⅱ,were divided into SHS group and no-SHS group (SBP in the upper extremity decreased by > 30 mm Hg or decreased to < 80 mm Hg)after spinal anesthesia.HR,SBP,DBP of supine position and left lateral position before anesthesia were re-corded,and brachial artery peak velocity were measured by Ultrasonic.The differences of the above indexs before and after the transformation position were calculated.The receiver operating characteris-tic curve (ROC)was plotted by indexs of which P values were less than 0.05,to evaluate the predic-tive effect of each index on SHS after spinal anesthesia.Results Among the 196 patients,89 cases (45.4%)developed SHS after spinal anesthesia.SBP,DBP,peak velocity of brachial artery (Vpmin) and brachial artery peak velocity variation (ΔVp)were different before and after the transformation position (P<0.05).The difference in SHS group was significantly higher than no-SHS group.The areas under ROC curve (AUC)of ΔSBP,ΔDBP,ΔVpmin,ΔΔVp were 0.711 (95%CI 0.575-0.846), 0.573 (95%CI 0.419-0.727),0.948 (95% CI 0.895-0.987),0.864 (95% CI 0.770-0.958),and the cut-off values were 17.5 mm Hg,7.6 mm Hg,17.8 cm/s,and 13.1%.Conclusion The differ-ence of brachial artery peak velocity measured by ultrasonic in different positions of parturient can ef-fectively predict the occurrence of SHS,in which ΔVpmin≥ 17.8 cm/s has better predictive effect.

We report a complete genomic sequence of rare isolates (minor genotype) of the SARS-CoV from SARS patients in Guangdong, China, where the first few cases emerged. The most striking discovery from the isolate is an extra 29-nucleotide sequence located at the nucleotide positions between 27,863 and 27,864 (referred to the complete sequence of BJ01) within an overlapped region composed of BGI-PUP5 (BGI-postulated uncharacterized protein 5) and BGI-PUP6 upstream of the N (nucleocapsid) protein. The discovery of this minor genotype, GD-Ins29, suggests a significant genetic event and differentiates it from the previously reported genotype, the dominant form among all sequenced SARS-CoV isolates. A 17-nt segment of this extra sequence is identical to a segment of the same size in two human mRNA sequences that may interfere with viral replication and transcription in the cytosol of the infected cells. It provides a new avenue for the exploration of the virus-host interaction in viral evolution, host pathogenesis, and vaccine development.
Base Sequence ; China ; Cluster Analysis ; Gene Components ; Genetic Variation ; Genome, Viral ; Genotype ; Molecular Sequence Data ; Phylogeny ; Reverse Transcriptase Polymerase Chain Reaction ; SARS Virus ; genetics ; Sequence Analysis, DNA ; Severe Acute Respiratory Syndrome ; genetics