Objective: to explore the influences of different waveshapes with electro-acupuncture on the content and the ratioof blood-serum estradiol(E2) and progesterone(P) in delayed-pregnant rats.
目的：探讨电针的不同波形对晚孕大鼠血清雌二醇（E2）、孕酮（P）含量及其比值的影响。
2
This resistance is not the result of altered receptors, but comes from the ability of proteins in their bloodserum to neutralize the effects of venom.
这种抗性并不是受体变化的结果，而是松鼠血清里蛋白质的作用，它们能抵消毒液的影响。
3
However, due to the simplicity of getting a blood sample, easily testable biomarkers found in bloodserum would be especially useful.