Stem Cells in the Binding of Isaac: Rebirth (BOIR)
Stem Cells: HP up

The Stem Cells is a passive item in The Binding of Isaac: Rebirth (TBOIR)


Heart Containers increased by 1

Shot speed increased by 16%

Character Appearance[edit]

Isaac has a fetus growing on the side of his head:


Strategy Guide/Tip[edit]

  • When you pick up this item you get healed for one and a half hearts

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