This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
FMIB Nursing Arrangements of Ray.jpeg check categories August Nursing Arrangements of Ray Lower part of the oviduct of the Indian Batray Petroplataea micrura laid open to show the unborn young one and the filaments by the secretion of which the latter is nourished large bundle of filaments passes through each spiracle into the