Cover Picture: MDGA1 expression in mouse forebrain on the day of birth (left panel) and at the end of the first postnatal week (right panel). MDGA1 is a unique cell adhesion molecule of the Ig superfamily. Expression is revealed by in situ hybridization using radioactively labeled riboprobes for MDGA1(red) on coronal brain sections counterstained with a blue fluorescent nuclear dye. See Takeuchi et al. in this issue for details. pp. 1531–1541.
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