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Fig. 1. PDGFR
, PDGFRβ and Pax3 mRNA expression at st.
8 and 10. (A) PDGFR
is expressed in the head and somites at
st. 8 in whole mount. (B) In section, PDGFR
is detected in the
midbrain-level mesenchyme. (C) At st. 10, PDGFR
is in neural
crest and somites. (D) Migrating neural crest cells express
PDGFR
at the midbrain-level at st. 10. (E,F) PDGFRβ
is strongly expressed in ectoderm and neural folds at st. 8.
(G,H) PDGFRβ is maintained in ectoderm at st.10.
(I,J) Pax3 is absent from presumptive opV trigeminal placode at
st. 8. (K,L) Pax3 marks opV trigeminal placode ectoderm and
early migrating neural crest at midbrain level. Broken white lines in whole
mounts (A,C,E,G,I,K) indicate level of section (B,D,F,H,J,L). ECTO, ectoderm;
MES, mesenchyme; NF, neural folds; NC, neural crest.