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Abstract
Phosphatidylserine plays an important role in cell membranes. We have reported the occurrence of phosphatidyl-D-serine (D-PS) in the rat cerebrum. Here, we describe the tissue distribution of D-PS in the rat. The D/D+L ratio of D-PS in the cerebrum was 0.9%, while no detectable amount of D-PS was detected in the cerebellum. D-PS was also found in the heart, spleen, lung, testis, liver, and kidney in a range of 0.05–0.7% (the D/D+L ratio). Thus, D-PS, even in small amounts, is localized to the cerebrum in the brain and is distributed to various tissues other than the brain in the rat.