In 1943, Horstmann and Tatlock reported detecting cold agglutinins in the serum of patients with primary atypical pneumonia. Fifty years after Landsteinerâs findings, the term âcold agglutinin diseaseâ was coined by Schubothe.
Mulattoes were the direct offspring of plantation rapes. Slave masters often threat the female slaves if they resist the masterâs desire of having intercourse. If they fought back, the female slaves will be whipped, will be beaten up, or worse of all, will be killed.
With widespread racial mixture, Negro came to mean any slave or descendant of a slave, no matter how much mixed. Eventually in the United States, the terms mulatto, colored, Negro, black, and African American all came to mean people with any known black African ancestry.Mulattoes are racially mixed, to whatever degree, while the terms black, Negro, African American, and colored include both mulattoes and unmixed blacks.As we shall see, these terms have quite different meanings in other countries.ventually in the United States, the terms mulatto, colored, Negro, black, and African American all came to mean people with any known black African ancestry. Mulattoes are racially mixed, to whatever degree, while the terms black, Negro, African American, and colored include both mulattoes and unmixed blacks.