Fig. 3. Ret+ cells grafted to the vagal NCC pathway of E8.5 embryos
are capable of colonising the entire length of the gastrointestinal tract.
(A) Whole-mount X-Gal staining of gut from E8.5+3 mouse embryos
transplanted with Ret+ cells from the intestine of E11.5
Rosa26bgeo embryos. Note the efficient colonisation of the entire gut
by β-geo+ cells. (B) Higher magnification of the gut
shown in A. Arrow points to a cluster of β-geo+ cells.
(C) Cryosections of E8.5+3+7 gut show that the progeny of grafted cells
are localised within the myenteric plexus (mp, arrows). (D,E)
Similar cryosections from embryos transplanted with YFP-expressing
Ret+ cells were double immunostained for GFP and TuJ1 (D) or for
GFP and B-FABP (E). st, stomach; mg, midgut; cae, caecum.