. . . "Representative examples of agents that stimulate cellular proliferation include pyruvic acid, naltrexone, leptin, D-glucose, insulin, amlodipine, alginate oligosaccharides, minoxidil, dexamethasone, isotretinoin (13-cis retinoic acid), 17-??-estradiol, estradiol, 1-??-25 dihydroxyvitamin D3, diethylstibesterol, cyclosporine A, L-NAME (L-NG-nitroarginine methyl ester (hydrochloride)), all-trans ret" .