Maximum Forced Expiratory Flow Rate as a Measure of Ventilatory Capacity

FiG. 9.-An example of predominantly extravascular destruction. 0.4 ml. of Rh-positive red cells was labelled with 51Cr, then sensitized in vitro with Rh antibody and reinjected into the donor. The red cells were iemoved from the circulation with a half-time of approximately 20 minutes; the amount of radioactivity in the plasma never exceeded 3% of the total amount injected in the form of labelled red cells.