A cell produced at the second stage in the formation of spermatozoa, formed from a spermatogonium and dividing by meiosis into spermatids.
- ‘Lying between, and nurtured by, the Sertoli cells, the primary spermatocytes undergo two meiotic divisions and cellular remodelling to produce mature sperm.’
- ‘As daughter cells of spermatogonia, the primary spermatocytes reside just apical to the layer of spermatogonia.’
- ‘After 5 weeks, oligospemia was observed, and after 10 weeks, testicular atrophy accompanied by the loss of sperm cells and spermatocytes was confirmed.’
- ‘The first breakthrough in the development of insect cell culture was the report of maturation of testicular follicle cells to spermatocytes in a moth in an artificial medium.’
- ‘At least 10 spermatocytes at the metaphase I stage were recorded per male.’
We take a look at several popular, though confusing, punctuation marks.