Fertilization. Comparative Morphology, Biochemistry, and by Charles B. Metz, Alberto Monroy

By Charles B. Metz, Alberto Monroy

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Modena; English translation, ( 1 7 8 4 ) . London. Spallanzani, Lazzaro ( 1 8 0 3 ) . English translation by John Graham Dalyell, Esq. " Edinburgh. Printed for William Creech and Archd. Constable, Edinburgh and T. N. Longman and G. Rees, London. Tyler, A. (1964a). Survey of some investigations of problems of reproduction by immunologie and protein-biosynthetic methods. Proc. Vllth Intern. Conf. on Phnned Parenthood: Excerpta Med. Intern. Congr. Ser. 72, pp. 527-538, Tyler, A. (1964b). Immunologie aspects of fertility control.

1964) used proflavine, 100 mg/1, to induce mutation in the flagellate Chlamydamonas reinhardii; the mutants sink to the bottom of the liquid culture media. While their flagella appear approximately normal in length, the whole organisms are unable to move, even though some of the flagella exhibit slight uncoordinated twitching. Electron micrographs show the nine doublet plus central two array with moderately densely staining subsidiary fibers and radial lamellae in the wild-type. The mutants' flagella do not show well-defined projections or the sidearms characteristic of the «-fibers; there appears to be less organized material in the matrix; and the central pair, the ^-fibers, appear highly disorganized.

Do you react when you are stretched, or when you get a message from headquarters? To whom and by whom is the message delivered? " II. Morphology of Cilia and Flagella A. ULTRASTRUCTURE OF CILIA AND FLAGELLA A vast amount of attention has been directed to the intriguing ultrastructure of the filiform spermatozoon and cilia, of which the flagellum apparently is more than merely a complex, special case. It is increasingly evident that fine structural analysis, while essential, is not sufficient of itself for interpretation of the physiological mechanisms which it subserves.

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