Confocal immunostaining of fn1 AB1 (fibronectin 4H2, red) showing lateral plate mesoderm surrounding the foregut and ectoderm, in NF stage 34& 35 in X. laevis embryonic foregut. Smad1 AB1 (pSMAD1/5/8, green) staining foregut endoderm.
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XB-IMG-81055