. The cytology and life-history of bacteria. Bacteria. no THE CYTOLOGY AND LIFE-HISTORY OF ACTERIA conjugations, with the nuclear material fused at the point of contact. Usually only a single pair of bacteria will conjugate thus, but there seems little reason to doubt that the star-hke clusters which have been reported in Phytomonas tumejaciens and in cytophagas, as well as in many other genera, are exactly similar, multiple conjugations. In the case of P//. tumefaciens the concentration of Feulgen-positive material at the centre of the cluster has been Fig. 48 THE NUCLEAR REDUCTIO
. The cytology and life-history of bacteria. Bacteria. no THE CYTOLOGY AND LIFE-HISTORY OF ACTERIA conjugations, with the nuclear material fused at the point of contact. Usually only a single pair of bacteria will conjugate thus, but there seems little reason to doubt that the star-hke clusters which have been reported in Phytomonas tumejaciens and in cytophagas, as well as in many other genera, are exactly similar, multiple conjugations. In the case of P//. tumefaciens the concentration of Feulgen-positive material at the centre of the cluster has been Fig. 48 THE NUCLEAR REDUCTION PROCESS (1) In Rhizobiuin ; a, b, c, d represent stages in the maturation of the resting nucleus, and the ehmination of a small daughter nucleus. (Reproduced frn)ii Cold Spring Harbor Symposia). (2, 3) The elimination of the rejected daughter nucleus in Bacillus ; x, y shows two suc- cessive stages in the same organism. Phase-contrast photographs in the living state. [Re- produced from Experimenta .Cell Research, by permission of Prof. R. J. ]'. Pulvertaft).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bisset, Kenneth Alexander. Baltimore : Williams and Wilkens
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbacteria
