Table 1.

Comparison of Homeostasis-driven Proliferation in B6 and RAG^−/− Hosts

	Day 20			Day 68
	Percentageof BrdU	Cell no.	Percentageof Lysis	Percentageof BrdU	Cell no.	Percentageof Lysis
OT-I RAG−/−→RAG−/−	54	3	30	35	9	66
OT-I RAG−/−→B6	36	46	43	7	83	7

Values represent average numbers from four mice per time point for irradiated B6 hosts, and two mice per time point for RAG^−/− hosts. In all, 10 RAG^−/− hosts were analyzed between days 12 and 92 after transfer.