Stem Cell

Stem Cell is an unlockable trinket added in The Binding of Isaac: Afterbirth †.

Effect

 * Heals for half a Red Heart upon traveling to the next floor.
 * Heals Isaac's Red Heart health to 50% of maximum upon traveling to the next floor. If his health is already equal to or above 50%, it heals half a Red Heart instead.

Synergies

 * : heals a lot of health back, usually resulting in full red health.

Interactions

 * The healing will occur before any health is drained.
 * Adds 1 to her "blood charges" resource.
 * : Returning to a previous floor will keep the health gained from Stem Cell, as well as granting another half-red heart after going down to the next floor again.

Trivia

 * A Stem Cell is an undifferentiated cell of a multicellular organism that is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cells arise by differentiation.