Responding to the Health Ministry's approval to a proposed amendment to the Indian Medical Council (IMC) Act to allow the Council to hold a national-level entrance exam for admission to medical colleges and deemed universities, Karunanidhi said his government had scrapped such a test in Tamil Nadu in 2007-08.
The government had later adopted an admission system based on a candidate's Class XII marks, he said adding this had benefited the rural students.
"Further, such a national entrance examination would amount to "infringing in state's rights," Karunanidhi said adding "I would like to make it clear that (DMK) will oppose it in any form.