Table 1.

Reversible variations in marrow cell phenotype with cell cycle phase after engraftment into lethally irradiated mice.

Characteristic	Whole marrow	LRH	Lin-Sca-1+
Engraftment	Nadir late S/early G2	Nadir late S/early G2 first and second cycles with recovery in between
Homing			Nadir late S/G2 second cycle
Increase in lung conversion			Early S-phase
Differentiation into megakaryocyte and proliferative granulocytes		Around G1/S interface
Differentiation into non-proliferative granulocytes		Late S-phase