In nearly all of the isolates, ALS1, HWP1, SAP4–SAP6, LIP1–LIP10, PLB1, and PLB2 were expressed after infection of the cell line A431, whereas CDR1 was expressed in 20 (51.3%) and ALS3 in 14 (35.8%) (Table 4). This evidence concerns the gene CDR1 and infection.