Assertion: antibody's structure | /r/HasProperty | a cleavage product
Facets:
Source sentences:
text: 1 Secretory IgA is formed by the combined function of plasma cells producing multimeric IgA and epithelial cells expressing pIgR a Schematic diagrams illustrating the structure of human dimeric IgA1, human dimeric IgA2, human secretory IgA1, and the free secretory component (SC, which is a cleavage product of pIgR).