Figure 5. In cross fostering experiments more CD44⁺CD25⁻ and CD44⁺CD25⁺ thymocytes are found in the thymus of IL-7 knock out animals fostered onto wild type animals (⋄) than those left with their IL-7 knock out mothers (▵).

Values are similar to those obtained with wild type animals maintained on wild type mothers (▴). Values which are significantly different (where p<0.05) from the knock out animals on knock out mothers are indicated by the annotation.