The lions that guard the entrance to the Art Institute were removed on June 14 and transported to the Conservation of Sculpture and Objects Studio Inc., at 900 Desplaines Ave. in Forest Park, headed by conservator Andrzej Dajnowksi. There they received a deep cleaning and fresh coat of wax. Now they are “cleaner and greener than ever,” according to the museum. They were re-installed on July 19 at noon. The public is welcoming the return of the “Lions of Michigan Avenue,” who will resume their vigilance over Michigan Avenue.