Figure 3.

Comparison of the grade of splenic erythropoietic activity in spleen touch preparations and the peripheral blood high fluorescence ratio (HFR) reticulocyte count, in individual mice treated with chloramphenicol succinate at 2500 and 3500 mg/kg for 5 days, and sampled at day 1, 7, 14 and 21 after the final dose. Splenic erythropoietic activity was graded in spleen touch preparations as: 0, absent; 1, very slight; 2, slight; 3, moderate; 4, marked. Horizontal bars indicate the mean HFR reticulocyte value at each grade of splenic erythropoietic activity.