Aged ; Humans ; Lung Diseases, Fungal ; complications ; microbiology ; Male ; Pneumoconiosis ; complications

The hypothesis that tumor comes from stem cells has been demonstrated in various human tumors.Cancer is not only a genetic disease but also a stem cell disease. It is a key to regeneration, mutations and recurrence of tumors that gene mutations affect stem cells, and then stem cells mutate to cancer stem cells. In an effort to review the evidence that liver cancer stem cells exist, two fundamental questions must be addressed. First, do hepatocellular carcinomas(HCC)arise from liver stem cells? Second, do HCCs contain cells that possess properties of cancer stem cells?More recently, there is a hypothesis that HCC arise from maturation arrest of liver stem cells. Analysis of the cells in HCC supports the presence of cells with stem-cell properties(ie, immortality, transplantability, and resistance to therapy). However, definitive markers for these putative cancer stem cells have not yet been found and a liver cancer stem cell has not been isolated.

Hospitals, Pediatric ; United States

Aged ; Drug Resistance, Bacterial ; Humans ; Intensive Care Units ; Male ; Microbial Sensitivity Tests ; Pneumoconiosis ; microbiology ; Sputum ; microbiology

Enteral Nutrition ; Humans ; Infant Nutritional Physiological Phenomena ; Infant, Newborn ; Infant, Premature ; Practice Guidelines as Topic

Congresses as Topic ; Nutritional Sciences

Child ; Humans ; Metabolomics ; Pediatrics ; methods

Child ; Child Welfare ; Humans ; Safety

Objective To develop a control program running on the magnetic induction escape decompression control timer. Methods The software was developed by VHDL in a modular style under the environment of Quartus II. Results The control software stores decompression profile and accurately controls the commitment of the decompression process. Conclusion The program can work accurately according to the profile selected and meet our needs perfectly.

Spinal cord injury is one of the important field of neuroscience, and neural tract tracing techniques are important research tools. The neural fiber types in the spinal cord are complex, and there are some difference in structures between human beings and animals. This article reviewed different types of neural fibers closely related with spinal cord injury and regeneration, the difference between human beings and animals, and the application of neural tract tracing techniques in the study of spinal cord injury and regeneration.