Answers are grounded in this paper and cite their sources.
egatively stained cytoplasmic microtubules of lung-fluke sperm show a helical structure that is not found in peripheral doublet tubules of axial units. In transverse sections, the wall of such microtubules appears to comprise about eight subunits.
No takes yet. Share an insight, caveat, or question.
Paul R. Burton (1966) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: