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Fig. 5
Representative TEM images showing small intestine ultrastructure from control females (a) and males (b), and 0.5 μM PFOS-exposed females (c) and males (d). In all females treated with PFOS (c), shrunk or swelling microvilli appeared alternately on the brush border (BB). In all males treated with PFOS, epithelium microvilli disconnected and fell off to intestinal lumen (d). Tight junction (▵) between cells was obscure, cytoplasmic matrix were distributed unevenly; n = 5 fish per sex from each group. TEM: transmission electron microscopic; PFOS: perfluorooctanesulfonic acid.
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Full text @ Hum. Exp. Toxicol.