. The cytology and life-history of bacteria. Bacteria. (Reproduced from the Journal of Hygiene.) Fig. 31 THE PRIMARY NUCLEUS AND VEGETATIVE FUSION CELLS IN VARIOUS BACTERIA ((a) Primary nucleus ; (b) Fusion cell, in each case) Top left—Smooth bacterium. Top right—Rough bacterium. Bottom left—Myxobacterium. Bottom right—Short-chained streptococcus. The individual chromosomes cannot be resolved in this case. The filament increases in length and eventually fragments, exactly as in the case of the smooth types, but the behaviour o£ the nuclear material is slightly different. The central mass of ch
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. The cytology and life-history of bacteria. Bacteria. (Reproduced from the Journal of Hygiene.) Fig. 31 THE PRIMARY NUCLEUS AND VEGETATIVE FUSION CELLS IN VARIOUS BACTERIA ((a) Primary nucleus ; (b) Fusion cell, in each case) Top left—Smooth bacterium. Top right—Rough bacterium. Bottom left—Myxobacterium. Bottom right—Short-chained streptococcus. The individual chromosomes cannot be resolved in this case. The filament increases in length and eventually fragments, exactly as in the case of the smooth types, but the behaviour o£ the nuclear material is slightly different. The central mass of ch