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Fig. 6. Expression of RAR{alpha} and raldh-2 in motoneurons of lumbar cord of the of 6-month-old adult rat. In situ hybridization of A, RAR{alpha} expression in motoneurons of normal fed rat; B, RAR{alpha} expression in motoneurons of retinoid deficient rat; C, raldh-2 expression in motoneurons of normal fed rat; D, raldh-2 expression in motoneurons of retinoid deficient rat; E, quantification of the in situ signals of RAR{alpha} (columns 1 and 2) and raldh-2 (columns 3 and 4) expression compared with gapdh in motoneurons. Columns: 1 and 3, normally fed rats; 2 and 4, retinoid-deficient rats. Error bar=s.e.m. There was a significant difference in RAR{alpha} expression *P<0.01 but not raldh-2 expression between normally fed and retinoid-deficient rats. Students t-test, n=5-8. Arrows indicate motoneurons.