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How the Male Reproductive System Works Sperm are male reproductive cells.
(ROOT (S (NP (DT The) (JJ male) (JJ reproductive) (NN system)) (VP (VBZ consists) (PP (IN of) (NP (NP (NNS structures)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (NP (NN sperm) (CC and) (NN secrete) (NN testosterone)))))))) (. .)))