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. Author manuscript; available in PMC: 2011 Jun 6.
Published in final edited form as: Science. 2009 Dec 10;327(5963):302–305. doi: 10.1126/science.1182213

Fig. 3.

Fig. 3

(A) Juvenile pelvic-reduced BEPA stickleback expressing a Pitx1 transgene driven by the Pel-2.5kbSALR enhancer, compared to (B) uninjected sibling. External spines form only in transgenic fish (black arrowhead) (C and D) Alizarin red stained pelvic structures of adult transgenic fish compared to BEPA parental phenotype. BEPA fish normally develop only a small ovoid vestige (OV) of the anterior pelvic process (AP). Transgenic fish show clear development of the anterior process (AP), ascending branch (AB), and posterior process (PP) of the pelvis, and a prominent serrated pelvic spine. Pectoral fin (PF) rays develop in both fish.