Is a gland that plays specialized roles in both the lymphatic and immune systems?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

The means by which a cell transports large molecules out of the cell is called

Approximately how many times does an average human heart beat in a lifetime?