Abstract
RECENT investigations have suggested that micropino-cytosis plays an important part in the formation of egg yolk in insects. Roth and Porter1 have recently described the occurrence of this process at the periphery of developing oocytes in the mosquito. Anderson2 has observed a similar process in the oocyte of Periplaneta. It has been described in the small milkweed bug Lygaeus kalmii by Kessel and Beams3. The last-named workers suggest that micropinocytosis plays an important part in the formation of some yolk constituent, but it is questionable whether it is responsible for all yolk production.
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References
Roth, T. F., and Porter, K. R., Electron Microscopy, Fifth Intern. Cong. Electron Microscopy, Philadelphia, 2 (Academic Press, New York).
Anderson, E., Sec. Ann. Meeting, Amer. Soc. Cell Biol., 2 (abstract), San Francisco (1962).
Kessel, R. G., and Beams, H. W., Exp. Cell. Res., 30, 440 (1963).
Reynolds, E. S., J. Cell. Biol., 17, 208 (1963).
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HOPKINS, C., KING, P. Occurrence of Microvilli and Micropinocytosis in Trophocyte of Bombus. Nature 204, 298–299 (1964). https://doi.org/10.1038/204298b0
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DOI: https://doi.org/10.1038/204298b0
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