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Science 14 February 1969:
Vol. 163. no. 3868, pp. 678 - 679
DOI: 10.1126/science.163.3868.678
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Articles

Microtubules in Spermatozoa of Childia (Turbellaria, Acoela) Revealed by Negative Staining

Donald P. Costello 1, Cathierine Henley 1, and Chasries R. Ault 1

1 Department of Zoology, University of North Corolina, Chapel Hill 27514

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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Flagellar Movement: A Sliding Filament Model: An explanation is suggested for the spontaneous propagation of bending waves by flagella.
C. J. Brokaw (1972)
Science 178, 455-462
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Science. ISSN 0036-8075 (print), 1095-9203 (online)