Expression patterns of the genes encoding TSR domain proteins of the A-C groups in the head region of Hydra oligactis.

Among the 10 genes of the A-C groups, six (A- D, G and I) are strongly expressed in the endodermal cells and two (H and J) in the ectodermal cells of the hypostome. The transcripts of XM_002167490 (E) and XM_00215776 (F) were only detected in the tentacles, and not in the hypostome. XM_002160899 (H) was detected in the ectodermal cells of both the hypostome and tentacles. Accession numbers were labeled on the lower left of each panel. The domain structures of the genes were shown on the top of photo panels for each group.