FH and infectious mononucleosis: As shown in Figure 6A1, compared with the WT rats, the values of white blood cell (WBC), platelet hematocrit (PCT), %mononucleosis (%MONO), #lymphocyte (#LYMPH) and #eosimophil (#EOS) in the FH+/− KO rats were observed decreased with 49.0% (P = 0.004), 14.7% (P = 0.039), 24.5% (P = 0.025), 51.6% (P = 0.007) and 58.0% (P = 0.023), respectively, and the differences were consistent in both male (Figure 6A2) and female (Figure 6A3) rats.