User blog comment:Supahbadmarine/Too Many Loyalists!/@comment-1257337-20110604111635/@comment-2253300-20110606045914

Very True. So we can not say it is canon because there are no concrete examples, but we can not say it is NCF because there is nothing saying it doesn't happen and there is evidense that it may happen. An interesting dilemma. Also, on the point of whether the imperium would use Traitor Gene-seed I would like to point out how valuable it is. The Imperium relies on it's military, and Space Marines are a key aspect of it. In making Space Marines the Gene-seed is the most important resource. You could say that Space marine Gene-seed is the most valuable resource of the Imperium. They would not throw it away unless it was irreversibly tainted, and not all the Traitor Legions had Gene-seed flaws as SniperGhost implied. Chaos can effect anyone even if they are not defective.