Can stem cell be injected through veins although arterial injection in practise?
Injection of stem cells can be done through vein but the number of cells goes to the muscle will be very less since the venous blood will go across the liver and heart and the stem cells will be eventually lost and that will give minimal beneficial effects. Eg: if you inject 10 million cells through vein around 1 million cells alone will reach the muscle. In some cases, intravenous will be done with some considerations. Even intramuscular can be done but still multiple doses are needed however it can leads to other complications.