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(A) Immunohistochemical detection of TBC1D21 signals in the human testicular sections from The HUMAN PROTEIN ATLAS. Arrows indicate the signals on sperm and spermatids. (B) The transcript amounts of TBC1D21 were significantly reduced in sperm samples from the teratozoospermia cases, compared with those in the fertile cases. (unpaired t-test, ***P = 0.0009).
