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Articles by Qing-Wang Li
Total Records ( 2 ) for Qing-Wang Li
  Zhi-Bin Liu , Zeng-Sheng Han , Qing-Wang Li , Hai Yang , Wen-Zong Lu and Wen-Ye Lia
  Infection efficiency is the key issue for gene delivery using adenovirus vector and usually unsatisfactory. In this study, recombinant adenoviruses encoding recombinant human EPO were prepared using the Adeasy system, and injected into the mammary gland of goats via the teat canal. BAPTA was used to treat the mammary gland to facilitate adenoviruses infection compared with EGTA. Milk serum was collected from the infected mammary gland and characterized by ELISAs and Western blotting. Expression level of rhEPO from the group treated by BAPTA was higher than that treated by EGTA.
  Jian-Hong HU , Qing-Wang LI , Yu-Lin CHEN , Zhong-Liang JIANG , Yong-Hong JIA , Li-Qiang WANG and Bo-Bo OU
  To investigate the effects of supplementation of vitamin B12 on bovine sperm post-thaw quality, vitamin B12 was added at the concentrations of 1.25, 2.50, 3.75, and 5.00 mg/mL to bovine semen cryoprotective medium. The results indicated that the motility and VSL, VCL, STR, and VAP values of sperm supplemented with 2.50 mg/mL vitamin B12 were significantly higher than those of other concentrations (P < 0.05). No significant difference was observed for LIN and ALH values and the percentage of grade a spermatozoa between the extenders containing 2.50 mg/mL and 3.75 mg/mL vitamin B12 (P > 0.05). The percentages of acrosome-intact and plasma membrane-intact spermatozoa were significantly improved (P < 0.05) by supplementing with 2.50 mg/mL vitamin B12. With all parameters measured, the concentration of 2.50 mg/mL vitamin B12 showed the best results on the quality of bovine semen in freezing-thawing. In conclusion, the addition of 2.50 mg/mL vitamin B12 to the extender improved the bovine frozen semen quality.
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