Cong-zhen Xu

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OBJECTIVE To study the dynamic changes of the activities of superoxide dismutase (SOD), amylase (AM) and alkaline phosphatase (ALP) and of the contents of epithelium growth factors (EGF) and insulin growth factors (IGF-1) in human colostrum (lactation 1 - 7 days postpartum). METHODS A total of 118 samples of human colostrum were taken from 20 healthy(More)
AIM To clone full length cDNA of human interleukin-21 (IL-21) and express it in E.coli. METHODS Total RNA was isolated from peripheral lymphocyte stimulated with anti-CD3 antibody. 5' and 3' terminal fragments of IL-21 gene (242 bp and 425 bp fragments respectively) were amplified using RT-PCR. The full length IL-21 cDNA was amplified by recombination PCR(More)
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