There are far more egregious examples than that. The first effective medical treatment for syphilus dates back to Paracelsus treating it with mercury (coincidentally - that's also the invention of chemotherapy)  - nearly 400 years ago.
Yet in the 1940s US army researchers deliberately hid from a large number of black veterans the fact that the disease they sought help for was syphilus, and withheld treatment -giving them nothing but placebos... for decades ! All to study the progression of the untreated disease. Surely such an experiment - in the country that just recently fought the Nazis - against people who had helped win that war, could not ever have been contemplated if white supremacy was not clouding the judgement of even these, supposedly objective, researchers ?

Marie Curie didn't receive credit for her work until well after her death, it was published under her husbands name to avoid the extreme sexism in physics. That was mere decades ago.

TBC.