Removal of selection pressure revealed that the resistance of CA-R was unstable and RF decreased by 63.2% after 5 successive generations.
该抗性品系对气调的抗性不太稳定，在无选择压力的情况下经室内5代饲养，抗性衰退了63.2%。
Methods the serum levels of ca, Zn were measured in 20 GHD children before and after 3 months of r-hGH therapy, and compared with that of 20 cases of NGHDSS and 20 normal children.
方法20例GHD患者在治疗前及治疗3月后分别测钙、锌水平并观察他们的身高变化，并与20例nghdss患者和20例正常儿童进行对照。
Methods the serum levels of ca, Zn were measured in 20 GHD children before and after 3 months of r-hGH therapy, and compared with that of 20 cases of NGHDSS and 20 normal children.
方法20例GHD患者在治疗前及治疗3月后分别测钙、锌水平并观察他们的身高变化，并与20例nghdss患者和20例正常儿童进行对照。
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