TB500 would most likely possess the greatest chance of cellular tissue regeneration.. Peptides possess the greatest affinity with recovery, because of their interactions/instructions with protein bonds and aminos..
If talking about AAS, anavar hands down has the greatest potential for muscle, cellular and even connective tissue regeneration and repair.. but don't mistake that for Mass gains, that's something entirely different... Pound-for-pound Trenbolone is far more aggressive if Incorporated in the right protocol.. but clinically proven anavar will help with training recovery even at extremely low dosages whike running multiple compounds as the Workhorses.. It's a reason why they give it to burn victims and even individuals with HIV and or Aids..