Abstract
Rat pups, 3 weeks old, were injected i.p. with combinations of ³H₂0 and either (3-¹⁴C]acetoacetate or
[¹⁴C]glucose. ³H/¹⁴C incorporation ratios were measured in lipid fractions of homogenates and myelin
prepared from whole brain and spinal cord. Spinal cord synthesized at least twice as much fatty acids and
3-fold more sterols than whole brain.
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