Zhǎowā de luǎnmǔ xìbāo cháng yòng yú biǎodá wàiyuán dànbái.
Xenopus oocytes are often used to express exogenous proteins.
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history
Xenopus was used in the first reliable pregnancy test (Hogben test, 1930s): injecting a woman's urine into a female X. laevis caused it to lay eggs if she was pregnant, because of human hCG cross-reactivity.
