5 ms·
Fascinating article. I was only aware of the 4 major blood types plus Rh±, it's also inspiring the efforts people will make to help others.
by Zaephyr 12y ago
Fascinating article. I was only aware of the 4 major blood types plus Rh±, it's also inspiring the efforts people will make to help others.
- smsm42 12y agoSame here. I was vaguely aware there are more but nowhere nearly realized how complex and varied the real situation is. Very illuminating article.