Studies on the neurosecretory system of Iphita limbata stal. Part II. Acid phosphatase and cholinesterase in the neurosecretory cells

Abstract

1. Most of the neurosecretory cells of the brain ofIphita limbata have a high concentration of acid phosphatase in their cytoplasm. Some cells do not show the enzyme in the cytoplasm. The nuclei of the ordinary brain cells contain acid phosphatase, but those of the neurosecretory cells show comparatively smaller amounts. The neurosecretory cells of the metathoracic ganglion also contain this enzyme. 2. The cytoplasm of the neurosecretory cells of the brain contains cholinesterase. 3. Alkaline phosphatase and succinic dehydrogenase are absent in the neurosecretory cells of the brain.