1851 W. B. Carpenter (ed. 2) 148 In the lower tribes, both of Plants and Animals, we find that ‘sperm-cells’ and ‘germ-cells’ are developed in the midst of the ordinary tissues of the body.
1881 St. G. Mivart 318 The male pro~nucleus is a spermatozoon, which is a part of the nucleus of the original sperm-cell.