R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY R. BICK, B. POINDEXTER, UT MEDICAL SCHOOL / SCIENCE PHOTO LIBRARY
Small intestine loose connective tissue, fluorescence deconvolution micrograph. Fluorescent dyes have been used to highlight tissues and cellular structures: collagen (green), fibroblasts (blue), macrophages (red). Also known as areolar connective tissue, loose connective tissue is a flexible tissue that cushions and protects internal organs. It includes fibroblasts that secrete the fibrous protein matrix (including collagen) that forms the bulk of the tissue. Macrophages, part of the body's immune system, digest pathogens and cellular debris.
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