Continued high albumin production by multicellular spheroids of adult rat hepatocytes formed in the presence of liver-derived proteoglycans. - Koide,N.; Shinji,T.; Tanabe,T.; Asano,K.; Kawaguchi,M.; Sakaguchi,K.; Koide,Y.; Mori,M.; Tsuji,T. (Biochem Biophys Res Commun, 1989)