lymphatic system

epithelial cells, thymocytes, hassalls corpuscle

thymus, ox

capsule, adipose tissue, outer cortex, inner medulla

thymus, ox

Connective tissue, cortex, medulla

fetal thymus, cat

capsule, lymphatic follicles in cortex, paracortex

Lymph node, dog

capsule, trabeculae, cortical follicle

lymph node, dog

capsule, subscapular sinus, cortical follicle, parafollicular tissue, sinusoid

lymph node, dog

capsule, trabeculae, subscapular sinus, T-lymphocytes, sinus

lymph node, pig

pig

What animal does this lymph node belong to?

capsule, blood filled sinuses

Hemal lymph node, cow

white pulp, red pulp, ellipsoids

Spleen, pig

capsule, trabeculae, splenic pulp

spleen, horse

white pulp, red pulp, trabecula, capsule

Spleen, sheep

trabecula, ellipsoid, blood filled sinusoids

spleen, cat

stratifies squamous epithelium, lymphoid tissue

tonsil, dog

lymph nodule (GALT)

stomach, cat

what is the dark circle structure in the picture?