Torres C N, Godinho H P, Setchell B P
J Reprod Fertil. 1981 Mar;61(2):335-40. doi: 10.1530/jrf.0.0610335.
The majority of the cross-sections of seminiferous tubules of nine-banded armadillos show only one type of cellular association as in most eutherian and metatherian mammals with scrotal testes. The spermatogenic cycle was divided into 8 stages, in relation to the shedding of the spermatozoa. The relative frequencies (%) of stages 1-8 were, respectively: 16.6, 7.5, 12.9, 9.1, 9.7, 18., 11.7 and 13.6. The duration of the cycle was 8.15 days, as determined by intratesticular injection of [3H]thymidine and removing the tissue at different times after injection.
九带犰狳曲细精管的大多数横切面显示，与大多数有阴囊睾丸的真兽类和后兽类哺乳动物一样，只有一种细胞组合类型。根据精子的排出情况，将生精周期分为8个阶段。1-8阶段的相对频率（%）分别为：16.6、7.5、12.9、9.1、9.7、18.、11.7和13.6。通过向睾丸内注射[3H]胸腺嘧啶核苷并在注射后不同时间取出组织，确定该周期的持续时间为8.15天。
