Cow gives us milk and BLOOD

          The grazzing domestic mammal is now on the list of blood donors

Cow is the most domesticated animal historically that support us with a variety of dairy products. Still, many rebuff human depending on their milk on health and ethical grounds. But Cows are going to be more helpful not just with milk but wirh their blood.
In what could be a breakthrough in medical feilds, a 33 year old Australian woman Tamara Coakley, was bought to life using cow's blood. Tamara, a car crash victim, was suffering from profuse blood loss, and her heart was failing. But she wasn't ready to accept blood from a donor on account of her religious faith - she was a "Jehovah's Witness"-which permits her to use only blood substitutes.
Panicked doctors pulled all stops to save her life, and eventually stuck on the idea of substituting human blood with experimantal plasma known as HBOC-2-1 from cow's blood. The required 10 units of haemoglobin was soon developed by the military.
Doctors of Melborn hospitals where Tamara was admitted administrated the blood-product for days. The patient, who was in a medically-induced coma, showed signs of recovery. Surprisingly, her haemoglobin levels doubled, making the experiment a huge success. According to medical sources will help solve blood shortage worldwide.