গুৰুগুৰু গ্ৰন্থচাহেব
গুৰু কোষকেন্দ্ৰ (Assamese)
1. A macronucleus (formerly also meganucleus) is the larger type of nucleus in ciliates. Macronuclei are polyploid and undergo direct division without mitosis. It controls the non-reproductive cell functions... from wikipedia.org