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The Macronucleus of Spirostomum

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Abstract

THE purpose of this communication is to describe an interesting property of the macronucleus of a species of Spirostomum, a large freshwater ciliate. The nuclear apparatus of this animal consists of a long cylindrical macronucleus and a number of small micronuclei. The cytology of this species has been described by Seshachar and Padmavathi1. Feulgen preparations show a number of granules of varying sizes in the macronucleus embedded in a more homogeneous matrix.

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References

  1. Seshachar, B. R., and Padmavathi, P. B., J. Protozool., 3, 145 (1956).

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  2. Rudzinska, M., and Porter, K. R., J. Protozool., 2, 5 (1955), Supplement. Zebrun, W., ibid., 4, 22 (1957), Supplement.

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  3. Callan, H. G., and Tomlin, S. G., Proc. Roy. Soc., B, 137, 367 (1950).

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  1. Department of Zoology, Central College, University of Mysore, Bangalore

    B. R. SESHACHAR

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  1. B. R. SESHACHAR
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SESHACHAR, B. The Macronucleus of Spirostomum. Nature 182, 1614–1615 (1958). https://doi.org/10.1038/1821614a0

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