Bone: The hard, rigid form of connective tissue constituting most of the skeleton of v â¦ ertebrates, composed chiefly of calcium salts.Cartilage: Tough, elastic, fibrous connective tissue that is a major constituent of embryonic and young vertebrate skeletons.
People with the blood type AB are in the greatest demand for plasma donation. Though they make up just 4 percent of the population, their plasma is universal, which means it can be used by anyone. At noncommercial donation sites, people can donate plasma every 28 days, up to 13 times a year. To learn more about donating blood, visit the American Red Cross website.
We collect some of your blood, keep the plasma and return the rest to you by apheresis. How long does it take? 45 minutes to donate, 1.5 hours for the appointment. How often can I donate? Every 2-3 weeks. Find out more about the plasma donation process.