Connective Tissue Cells from a Frog

Flat, pigmented, branched connective tissue cells from the sheath of a large blood vessel of a frog’s mesentery. The pigment is not distributed uniformly throughout the substance of the larger cell, consequently some parts of it look blacker than others (uncontracted state). In the two smaller cells most of the pigment is withdrawn into the cell body, so that they appear smaller, blacker, and less branched.

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