TABLE 1.

Transgene copy numbers in BAC200-Kit-GFP, BAC30-Kit-GFP, BAC3-Kit-GFP, and BAC200-Δ5′HS-Kit-GFP transgenic mice^a

BAC construct	Transgenic mouse line	No. of transgene copies
BAC200-Kit-GFP	T20	2
	T91	4
	T127	8
BAC30-Kit-GFP	T51	11
	T57	50
	T76	50
	T93	4
BAC3-Kit-GFP	T4	27
	T29	2
	T33	30
	T39	14
	T71	1
BAC200-Δ5′HS-Kit-GFP	T78	3
	T92	3

^aTransgene copy numbers were determined by comparing Kit-GFP and endogenous Kit signals from Southern blot analyses of genomic DNA using a phosphorimager (Bio-Rad).