However, we observed recently that when the bovine fetal ovary is first formed, it is not covered by a defined surface epithelium underlaid by a basal lamina at an interface with stroma, as observed in adult ovaries, except at the base of the ovary where it arises from the mesonephros (31, 81).
GA revealed a basal lamina at the ampulla and a bright but inconspicuously looking interstitial space.
For clear recognition of the epithelial-mesenchymal interface the basal lamina at the tip of a CD ampulla is marked by a cross on each of the related micrographs.
We distinguished a lamina at the cortical surface where diffusion was tangential along the surface, a lamina below the surface where diffusion was mainly radial, an internal lamina covering the Stria of Gennari, where both strong radial and tangential diffusion could be observed, and a deep lamina near the white matter, which also showed mainly radial diffusion with a few tangential compartments.
Mesenchymal stem/progenitor cells stay in distance to the CD ampulla and send out long protrusions contacting the basal lamina at the tip of a CD ampulla.
An alternative explanation for the rapid processing of lamina-associated PreA by ZmpSte14 would be the lack of a filamentous lamina, at least in the conventional sense.In the absence of direct observations on the organization of the somatic cell lamina, this latter suggestion cannot be entirely excluded.
A simple classic epithelium, such as the mature ovarian surface epithelium, consists of a single layer of epithelial cells with an underlying basal lamina at the interface with stroma.
Anterior caudal vertebrae have cruciate neural spines with a characteristic flaring of the lateral lamina at mid length (Figure 3D, left), mid caudal vertebrae have proportionately low neural spines (Figure 3E), and distal caudal vertebrae have biconvex centra of moderate length (Figure 3F).
Lamin A is localized to the nuclear lamina at the inner-side of the nuclear envelope, contributing to nuclear structural stability and other nuclear functions.
During normal optic fissure closure, the neuroepithelial basal lamina at the tips of the fissure margins dissolves in a contact-dependent manner as the tips fuse to form the continuous neural retina and RPE (35).
