proerythrocyte

pro·e·ryth·ro·cyte

(prō'ĕ-rith'rō-sīt),
The precursor of an erythrocyte; an immature red blood cell with a nucleus.

pro·e·ryth·ro·cyte

(prō'ĕ-rith'rō-sīt)
The precursor of a red blood cell; an immature red blood cell form with a nucleus.