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Loose Connective Tissue. ( LCT ). Areolar Tissue Pink = collagen Purple = elastin. Masson’s Trichrome Stain – blue = collagen. Orecin Stain for Elastin – purple “ribbon candy”. Sliver Stain for Reticular Fibers. Collagen synthesis and organization.
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Loose Connective Tissue (LCT)
Areolar Tissue Pink = collagen Purple = elastin
Proteoglycan A schematic representation of a proteoglycan. It consists of a protein core molecule bound with many different types of Glycosaminoglycans (GAGs). For example, a proteoglycan from cartilage matrix can have 30 keratan sulfate and 100 chondroitin sulfate GAG chains.
Aggregan – the largest extracellular proteoglycan complex Aggregan – the largest extracellular proteoglycan complex Core hyaluronic acid (GAG in blue) complexed with numerous proteoglycans . Core hyaluronic acid (GAG in blue) complexed with numerous proteoglycans .
Diagram of the Basal Lamina Basal cell memb w/ Integrins Laminin Nidogen Heparan Sulfate PGs Collagen Type IV
Cells of the LCT Fibroblasts
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