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From these samples they can diagnose a severe skin disease known as epidermolytic hyperkeratosis and such blood disorders as hemophilia and thalassemia, and the 40% of sickle cell anemia cases that amniocentesis misses.

Veterinarians at first called the sickness "Disease X," finally diagnosed it as hyperkeratosis,* a poisoning caused by chlorinated naphthalene.

An estimated 10,000 with hyperkeratosis have already gone through the yards.

In Fort Worth's stock pens, federal inspectors were carefully checking all cattle for hyperkeratosis letting them be slaughtered if not too sick.

Pathologically the first change noted in the epidermis is thought to be an acanthosis, followed by epithelial atrophy, and a hyperkeratosis, intercellular edema, and colloid degeneration of the prickle cells.