McNulty, J A Day-night variability in acid phosphatase activity of pineal gland macrophages. [electronic resource] - Neuroscience letters Aug 1988 - 254-8 p. digital Publication Type: Journal Article ISSN: 0304-3940 Standard No.: 10.1016/0304-3940(88)90198-x doi Subjects--Topical Terms: Acid Phosphatase--metabolismAnimalsCircadian RhythmGoldfishHistocytochemistryMacrophages--enzymologyMicroscopy, ElectronPineal Gland--enzymology