A health care center governed by sections 38a-175 to 38a-194, inclusive, may purchase, lease, construct, renovate, operate and maintain medical facilities and equipment ancillary to such facilities and such other property as may be reasonably required for its principal office and for such purposes as may be necessary in the transaction of the business of the health care center, and may otherwise invest in other securities permitted by the general statutes for the investment of trust funds, and in such other securities alone.