Board Thread:Theories and Speculation/@comment-44559522-20200130155655/@comment-36699565-20200217025201

Prolly yea. It's an established fact that Hashirama's cells produce inherent healing, and revitalizes physiologically, explicitly by the fact that they've been instilled on an entity's physicality.

However, a semi- classifying'd be desirable, as Yin Healing attributed to the Byakūgo, does not explicitly concur to the Yang element proposition, though that's implicitly likely. To conclude, it's likely an assimilation, or compound of sorts.