Answer:
Explanation:
Key developments in blood transfusion techniques
• Animal experiments over the years 1900-1916 gradually enabled transfusion to become the routine technique it is today. The key developments were:
• George Crile (1907) perfected the technique of transfusion from artery to vein using dogs, and described its application in 32 patients.
• Hustin (1914) showed that addition of sodium citrate could prevent blood from clotting and that citrated blood could be safely transfused into dogs.
• Richard Lewisohn (1915) determined the maximum amount of citrate that could be transfused into dogs without toxicity and thus determined the optimum concentration that could be added to blood for the best anticoagulant effect.
• Weil (1915) showed that citrated blood could be stored for 2 days and still be effective when transfused into guinea-pigs and dogs which had lost blood.
• Rous and Turner (1916) used rabbits to demonstrate that, with certain additives and proper treatment, citrated blood could be stored for 14 days and still be successfully transfused.
Through these animal experiments, the prolonged storage of blood without clotting thus became possible, so enabling the establishment of blood banks, and blood transfusion as a routine procedure.
Answer: the stems and roots please give brainliest
Vacuoles do /not/ digest molecules.
Answer:
LIVING THINGS NON LIVING THINGS
They possess life. They do not possess life.
Living things are capable of giving birth to their young one. Non living things do not reproduce.
For survival, living things are depended on water, air, and food. They are self-dependent.
Living things are sensitive and responsive to stimuli Non living things are not sensitive and do not respond to stimuli
Metabolic reactions occur constantly in all living things. There are no Metabolic reactions in Non living things.
Living organisms undergo growth and development. Non living things do not grow or develop.
They have a lifespan and are not immortal. They have no lifespan and are immortal.
Living things move from one place to another. Non living things cannot move by themselves.
They respire and exchange of gases takes place in their cells. Non living things do not respire.
Example: Humans, animals, plants, insects. Example: Rock, pen, buildings, gadgets.
Explanation:
