Israel’s RedC Biotech is developing a process for mass-production of red blood cells for transfusions. Working with Accellta, a spin-off startup from Israel’s Technion Institute, they use stem cells from O-negative donors to mass-produce red blood cells for most humans, even without testing.
https://www.israel21c.org/the-startup-aiming-to-make-blood-donations-a-thing-of-the-past/