Results:1) There is no embryonic tissue in gestation sac without or with little villous tissue in anembryonic pregnancy.
结果:1)枯萎卵妊娠的胎囊内只有囊液,没有胚胎组织。 妊娠囊外没有绒毛组织或绒毛组织较稀疏。
2
Results The detection rate of mass, yolk sac, embryonic bud, embryonic heartbeat and ovary was higher in the TVS or TAS TVS test than those in the TAS test (P<0.01).