a sperm cell is a kind of sex cell
sperm_cell is animal_or_body_part. sperm_cell is animal_gamete. sperm_cell is gamete. human_sperm_cell is sperm_cell. human_sperm_cell is human_gametes. reproductive_cell is cell. blastocyte is embryonic_cell. sperm_cell is noncancerous_cell. embryonic_cell is cell. male_animal_cell is animal_cell.