Dr. Charles R. Drew was an African American surgeon who discovered ways of storing blood plasma for transfusion. Along with this accomplishment, Dr. Drew also organized the first large scale blood bank in America. However, none of his achievements came without great difficulty, especially that of discrimination. 

Check out this historical highlight of an amazing and determined human, Dr. Charles R. Drew!

Sources: 
https://www.biography.com/scientist/charles-drew
https://www.acs.org/content/acs/en/education/whatischemistry/african-americans-in-sciences/charles-richard-drew.html