Loose Connective Tissue

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Presentation transcript:

Loose Connective Tissue (LCT)

Areolar Tissue Pink = collagen Purple = elastin

Orecin Stain for Elastin – purple “ribbon candy”

Sliver Stain for Reticular Fibers

Collagen synthesis and organization

PAS stain of epithelial basement membranes (BM)

Cells of the LCT Fibroblasts

LM of fibroblasts (arrows)

Adipose and Adipocytes

Adipocytes (fat cells)

Adipose Tissue – fat cells + CT septa (arrows)

Adipose Tissue fixed and stained w/ Osmium Tetroxide

Defense cells of the LCT Neutrophils, Plasma cells, Mast cells, and Macrophage

LCT – a = pericytes; b = mast cell; c = plasma cells; d = capillary

LCT – M = mast cell; P = plasma cells; F = fibroblasts; Eo = eosinophils, N = neutrophils

TEM of a Plasma Cell

TEM of a Mast Cell

TEM of a Macrophage