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Collagen I, laminin, and tenascin: ultrastructure and correlation with avian neural crest formation

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Figure

Fig. 1.Cameralucidaof the 16somite (stage 12) chick embryo at2 days.stagedrawingof sections A whole mount is shown on the left.The levels studied In detail in this report showthe epithelial (Epith,) somite(level of somite12, lowernght).beginningof neural c
Fig. 2. PAP immunostainingof type Icollagen(a.c,e) andtenascin(b,d) in wholemountsof stage12 embryos.Peroxidase staining for type Icollagenis weak or absent in the caudal 6 somites(bracket
Fig. 2. PAP immunostainingof type Icollagen(a.c,el andtenascin{b.dl in wholemountsof stage12 embryos.Pero)odasestammgfor rype/collagenis weak or absent in the caudal 6 samites(bracket.aJ
Fig. 3. Transversesectionsare epithelialaroundin the notochordof wholemountsthroughsomite2 la,d), somite7 (b,eJ and somite12 (c,t) of stage12 embryos,viewedwith thelight microscopeafter PAP immunolocalization.(a)TypeI collagen staining is extensivein the r
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