Fig. 4From: The progression of heartworm associated respiratory disease (HARD) in SPF cats 18 months after Dirofilaria immitis infectionPercentage of cats with enlarged caudal pulmonary arteries on radiographs with score of >2 (scale 0–3) after D. immitis infection. Group A (10) Selamectin topical initiated day 28 pi, Group B (10) Oral invermectin initiated day 70 pi, Group C (10) infected no treatmentBack to article page