What is PK Def and PRA-B?

What is PK Def and PRA-B?

What does it mean PK – N/K? And PRA – N/N? Why are some Bengal breeders posting about results of their cats? If my cat is a carrier, should I worry? Progressive retinal atrophy (PRA) has been known to affect purebred cats including Bengals. Cats affected with this...