Research institution approval under income tax provisions requires separate research accounts and annual audited filings before renewal. Approval is granted to Smt. Lubhuben Govindbhai Mistry Medical Research Society as an approved institution under section 35(1)(ii) of the Income-tax Act, subject to maintaining separate research accounts, filing annual returns of scientific research activities in prescribed forms by the specified date, and submitting audited annual accounts with copies to the prescribed authority and the concerned Commissioner of Income-tax by the prescribed annual deadline.