The micronucleus of Paramecium caudatum is distinctive from other closely related Paramecium such as P. multimicronucleatum and P. tetraurela. P. caudatum has only one micronucleus of a type in which ...

The micronucleus of Paramecium caudatum is distinctive from other closely related Paramecium such as P. multimicronucleatum and P. tetraurela. P. caudatum has only one micronucleus of a type in which ...

Like other ciliates P. multimicronucleatum has two morphologically and functionally different nuclei. Shown here is the tiny micronucleus, of which there are four, during interphase of this cell. This...

In mitosis the nuclear envelope of the micronucleus becomes heavily and uniformly labeled with anti-b-tubulin which is not in the form of microtubules. Some tubulin is also present inside the micronuc...

The first culture of P. multimicronucleatum which I had obtained from Carolina Biological Supply House contained a bacterial endosymbiont that resided specifically in the space between the two membran...

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A view of the micronuclei of Paramecium multimicronucleatum. The circumferential band cut in cross section in the upper nucleus looks like it is composed of a band of four microtubules. This band is c...

High resolution of cell in mitosis. The nuclear envelope of the micronucleus becomes heavily and uniformly labeled with anti-b-tubulin which is not in the form of microtubules. Some tubulin is also pr...

High resolution of cell in mitosis. The nuclear envelope of the micronucleus becomes heavily and uniformly labeled with anti-b-tubulin which is not in the form of microtubules. Some tubulin is also pr...

The micronuclear separation spindle. Nuclear pores are not empty perforations but are closed by nonetchable material. The separation spindle must elongate as microtubules lengthen and/or slide against...