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Karyotyping of the foetus is done from all of the following EXCEPT

Question and options

Karyotyping of the foetus is done from all of the following EXCEPT
  1. Lymphocyte
  2. Monocyte
  3. Amniocyte
  4. Fibroblast

Answer and explanation

Correct answer: B - Monocyte
Fetal karyotyping uses dividing or stimulable cells: fetal blood lymphocytes, amniocytes (amniotic fluid cells) and fibroblasts (chorionic villi/skin). Monocytes are not used for karyotyping.

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