卫生部最高长官York Chow说现在还没有迹象显示该病毒已在人群中扩散，并且声称调查正集中在作为感染源的家畜身上。
Health chief York Chow said there was no sign yet that the virus has been spread between humans and that investigations were focusing on poultry as being the source of the infection.
这意味着陆源污染和人群活动对近岸海区大气的影响。
It means that there was the influence of land pollution and human activity on the nearshore waters.
目的探讨汉族人群中脑源性神经营养因子（BDNF）基因（GT）n二核苷酸重复多态与精神分裂症阴性亚型发病之间的关系。
Objective To explore the relationship between (GT)n dinucleotide repeated polymorphism of the brain-derived neurotrophic factor (BDNF) gene and onset of negative subtype schizophrenia in Chinese.
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