T3 increases protein synthesis.. but not as much as it does degredation. This is pretty well documented. The net result is negative protein synthesis.
I think the WAR started the rumor that t3 can help gain mass on a cycle.. I don't believe this to be true.
No scientific studys of t3 use on bbers.. However, Bill Roberts has the same opinion I do... I don't think there is a man alive who can rival Bill Roberts on AAS and pharmacology.
Andy