6 Comments Add yours

  1. Bestha Srikanth says:

    The nucleus appeared ( without staining ) when the paramecium was fully grown, then the nucleus can be involved in the binary fission to increase their number

  2. Manu Prakash says:

    Beautiful images. It’s soectacular to see.

    The large round object could also be the contractile vacuole – which is very prominent in most ciliates.


  3. nageswar says:

    Manu sir, Good morning,
    We also in that way but it is not Contractile Vacuole in the present pic, it is Nucleus only. We have captured certain videos using foldscope, in which we have observed pulsations of contractile vacuole clearly.
    we will try to post that video too.


  4. nageswar says:

    We thought in that way initially as it look like Contractile Vacuole

  5. laksiyer says:

    Fantastic image. I would have thought it is a vacuole too, but you might be right. Note that in ciliates, you have two nuclei, the macronucleus and the micronucleus and both need to be passed on to the next gen during binary fission. During division, you can often seen the micronucleus and the macronucleus cluster at the center of the dividing cell.

  6. nageswar says:

    Yes you are right sir

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