The series of molecular signals initiated by a nodal protein binding of to an activin receptor on the surface of a target cell, which contributes to the establishment of an organism's body plan or part of an organism with respect to the left and right halves. [GOC:BHF, GOC:vk, PMID:12857784, PMID:17287255, PMID:20413706]
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M5: Ontology GO: Gene Ontology GO:BP: GO Biological Process