When stem cells grown on hard, rigid surface, then they became bone cells. Researchers demonstrate in Nature materials that human mesenchymal stem cells grown on a rigid substrate for some time become biased toward differentiating into bone-cell lineage, whereas cell grown on softer surfaces are just likely to eventually follow a bone or fat cell fate.
By looking at the diagram, and my knowledge of Punnett squares, i would say B. 4:16
Answer:
in order, blood vessels, capillary,artery,vein,cardiovascular system, ventricle, aorta, dont know 8 but nine is oxygen
Explanation:
