Stem Cells
ItemRebirthUnlocked
passiveGame ID 176★★★★
How do you unlock Stem Cells?
Verified starting unlockSource data confirms that no unlock is required.
Grants one full Red Heart container and +0.16 shot speed. [Repentance] Heals 1 additional Red Heart
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Stem Cells leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13