1. In a system in vitro, 65Zn accumulation by jejunal mucosal biopsies from patients with acrodermatitis enteropathica was found to be markedly reduced compared with controls. 2. We suggest that defective uptake of zinc by enterocytes is the primary abnormality responsible for the zinc deficiency underlying this disorder.

In this paper we prove the existence of uncountably many indecomposable continua in the dynamics of complex exponentials of the form Eλ(z) = λe z with λ > 1/e. These continua contain points that share the same itinerary under iteration of Eλ. These itineraries are bounded but consist of blocks of 0’s whose lengths increase, and hence these continua are never periodic.

Dr. Benach questioned whether the relationship between HLA-DR2 and Lyme disease has held up. Dr. Steere responded that additional patients have been tested since the initial report in 1979. It seems mainly that patients with neurologic involvement, arthritis or chronic arthritis, have an increased frequency of HLA-DR2. As yet, HLA phenotypes have not been determined for European patients. Dr. E...