Fig. 5From: Salmonid fish: model organisms to study cardiovascular morphogenesis in conjoined twins?Representative photomicrographs of the heart structure. a and c are normal controls; b and d are from the minor twin. a and b: From the spongiosum, with trabeculae (a); notice how they are very well developed in b. c and d show the compactum. The capillaries (arrowheads) are large and numerous in d. Bar is 50 μm in all figuresBack to article page