Fig. 3.

Comparison of Drosophila brains prepared by three different preparation and analysis procedures. Tape-supported at low temperature (a, d, g, j, m), at room temperature (b, e, h, k, n), and thaw-mounted at room temperature (c, f, i, l, o). The distributions of positive ions at m/z 549.5—ion fragment of TAG (44:1), and 521.5—DAG (30:1), respectively, and negative ions at m/z 281.2 [FA (18:1), oleic acid] and m/z 255.2 [FA (16:0), palmitic acid]. Scale bar is 200 μm. MC stands for maximal counts

(Reproduced from ref. [84] with permission, © John Wiley & Sons, Ltd)