Then, tissues were sampled, including liver, gills, intestine and stomach, cartilaginous bone
, dorsal bone plate, muscle, skin, and notochord.
The upper part of the occipital bone which lies between the two parietal bones is a membranous bone is known as interparietal bone, whereas the lower part (supraoccipital) is a cartilaginous bone
The rhBMP-2 implantation in an ectopic delivery system, shows that this molecule is osteoinductive, proven by histologic exams, where the implantation of different doses in different wait periods shows that new bone process with the use of rhBMP-2 resulted to a cartilaginous bone
, in the first period and that only BMP molecule is capable to begin the new process in vivo.
High energy scans showed "that fish lacking certain genes lost fin rays," which are the bones in a fish fin and are dermal, as opposed to human fingers, which are made of cartilaginous bones