人工中絶時に観察した妊娠初期胎児の心臓搏動ついて

抄録

The number of the rhythmical heart beats of the 29 abortives from 6 to 21 mm long early human embryos were in a first minute after birth 40-49 by 9 (31.3%), 20-29 by 6 (20.6%), the mean of all 29 embryos 41.5 per minute.