Mouse plasma (50 μg) was separated by 7.5% SDS-PAGE, and the membrane was blotted with HPA2 antibody (GTX134852) diluted at 1:5000. The HRP-conjugated anti-rabbit IgG antibody (GTX213110-01) was used to detect the primary antibody.

Human plasma (30 μg) was separated by 7.5% SDS-PAGE, and the membrane was blotted with HPA2 antibody (GTX134852) diluted at 1:5000. The HRP-conjugated anti-rabbit IgG antibody (GTX213110-01) was used to detect the primary antibody.