Table 2. Human β/γ mRNA in yolk sac of LCR γ-β mutant mice.

Constructs	β/γ fold increase	No. of lines
LCR –1348 γ-β wild type	1×	6
LCR –1348 γ-β GATA(d) mut	2×	4
LCR –1348 γ-β Oct1 mut	2×	4
LCR –1348 γ-β GATA(p) mut	1×	6
LCR –1348 γ-β CACCC mut	40×	8

Primer extension products from yolk sac of each transgenic line were quantitated and mean β/γ values were calculated. The mean for LCR –1348 γ-β wild-type mice was set at 1×.