The paired ovaries of these caecilians are elongated sac-like structures each including numerous vitellogenic follicles.
Visualisation of the complete cervical canal with a gestational sac over it and an empty uterine cavity confirms placental insertion in the scar.
Part of the filler wire protruded from the final sac.
These two tubes expand partially into five pairs of sac-like structures.
The eye movement classification is indicated in the upper left corner of the histogram (saccade sac, mixed mix, position 0drift activated pos).
The trend was in the order yolk sac endoderm epiblast derivatives > placenta.
We estimate that two experimenters can microinject a maximum of 15 embryo sacs per experiment with a 14% success rate of injecting recipient cells.
This in turn was shown to depend on the growth rates of the embryo and embryo sac, both of which differed between genotypes.
