Figure 2
From: Characterization of taxonomically restricted genes in a phylum-restricted cell type
Expression of taxonomically restricted genes identified in the suppression subtractive hybridization screening in Hydra nematocytes. Whole mount in situ hybridization of nine TRG sequences represent transcripts expressed exclusively in differentiating nematocytes. (a-h) Five transcripts show expression in all types of differentiating nematocytes: nb001 (a), nb035 (e), nb039 (f), nb042 (g), nb082 (h). (b-d) Magnifications of nematoblast nests: stenotheles (b); izorhiza (c); desmonemes (d). (i-k) Three TRGs are expressed only in isorhiza and desmonemes: nb012 (i); nb054 (j); nb092 (k). (l) One TRG, nb031, is exclusively expressed in stenoteles predominantly at the base of tentacles.