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Figure 1 | Arthritis Research & Therapy

Figure 1

From: Psoriatic arthritis: from pathogenesis to therapy

Figure 1

Inheritance of psoriatic arthritis. Two families are shown in which psoriatic arthritis (half-filled shapes) appears to exhibit a different pattern of inheritance. In the first it appears that the disease is inherited as a simple dominant, although the absence of disease in the parents is not consistent with this. In the second, there is an interplay between the psoriasis phenotype (quarter-filled shapes) in the parent and child in the third generation, and the instances of psoriatic arthritis in the second.

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