老师,这是啥意思。
Shh
knockout (Shh–/–
described (44) or by crossing Shh-Cre+/–
In contrast to Shh-Cre+/–
) embryos were then generated as previously
mice to Shh-Cre+/–
in the absence of SOX9, esophageal FOXA2 expression was lost
in Shh–/–
embryos (Figure 3, C–H). Shh–/–
mice.
Sox9fl/fl embryos, 其中cre .fl是啥意思呢?