Microtubules in spermatozoa of childia (turbellaria, acoela) revealed by negative staining - PubMed (original) (raw)

Microtubules in spermatozoa of childia (turbellaria, acoela) revealed by negative staining

D P Costello et al. Science. 1969.

Abstract

Many intact axial units, with attached basal plates, are found in spermatozoa of Childia groenlandica negatively stained with phosphotungstic acid. Electron micrographs show a total of nine doublet microtubules, confirming observations on sectioned material, where nine peripheral doublets, but no single central ones, occurred. Living spermatozoa move by waves progressing along a double undulating membrane.

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