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反向选择
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反向选择
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counter selection
反向选择
将反向选择标记基因导入受体细胞,在一定的筛选条件下,带有反向选择标记基因的细胞株不能生长,而不带有反向选择标记基因的细胞株则能够生长,从而对目的基因的转化子进行无选择标记的筛选。
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demidegree inward
demidegree outward
demigroup
demilitarized zone
demilitarized zone, DMZ
demineralization
Deming application prize
De Minimis
demiregular tessellation
demi-symmetry
demixing
DEMO
Democracy
democracy
Democracy and Education
Democracy and its Critics
Democracy in America
democralization of education
Democratic Action Party
Democratic Action Party,Venezuela
Democratic Alliance
democratic centralism
democratic coalition government
democratic coalition government in ethnically mixed areas
Democratic Conservative Party of Nicaragua
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