Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Masson's staining of thymus section at 6 months post‐fertilization. Image A shows the stratum L.a in Fig. 4. Image B shows the boundary between stratum L.c and L.d. Images (C, D) show the centre zone of the tilapia thymus. Black arrow in image A indicates myxocyte. Red arrow in images (A, B) indicates dense connective tissue. Red triangle in image B indicates collagenous fibers invading the thymus. Scale bar: all images as shown in (D).
