Human chorionic gonadotropic (hCG) and human placental latogen (hPL) are peptide hormones produced and excreted by placental trophoblastic cells during pregnancy.
绒毛膜促性腺
素、
胎盘生乳素是胎盘滋养细胞合成和分泌的

素。
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Moving on from like the first trimester complications where we have our fertilization errors and then our gestational trophoplastic disorders, what do we see show up more in the second trimester?
接下来讨论第二 trimester 时,我们看到哪些问题比第一 trimester 更为常见?第一 trimester 的问题包括受精错误和妊娠
细胞疾病,
么在第二 trimester 中,我们更常遇到什么情况?