另一个难题是，规章制度阻止品尝实验室培养的肉，因为它是用胎血清培养的，胎血清可能包含对人类有危害的污染物。
The other difficulty is that reulgations prevent the lab-grown meat from being tasted, because it has been grown using fetal serum which could contain contaminants that are dangerous to humans.
本文报道为了进行一种微量血清中和试验，使禽传染性支气管炎病毒马萨诸塞41株，适应鸡胚肾细胞培养物的过程。
This paper reports the course followed leading to the successful adaptation of IBV Massachusetts 41 strain to CEK cells as a prerequisite for the development of a micro serum neutralization test.
方法：以经口给予大鼠大豆异黄酮类提取物后分离的血清作为干预物，加入新生sd大鼠颅骨分离培养的成骨细胞(OB)中。
Methods: the serum collected from experimental rats given soybean isoflavones extract was added to the culture system of osteoblast cells (ob) isolated from the calvaria of neonatal SD rats.
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