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Expression of leptin receptors in cerebral microvessels composing the BBB and in the hypothalamus, shown by TaqMan real-time PCR. Compared with the 7-d-old neonates, ObR mRNA in the 2-month-old adults showed a significant decrease in the microvessels but not in the hypothalamic area. The homologous receptor gp130 had no age-related changes in mRNA in either region. *, P < 0.05 (n = 6 per group).
