Figure 3. Three dimensional reconstructions of a Vespula vulgaris queen. A, B and E are based on 59 250 µm MRI slices of a whole wasp (voxel size 31 x 31 x 250 µm, 6 averages, TR 0.5 s, TE 2.6 ms, acquisition time 13 hours); C and D are based on 61 140 µm slices of a wasp abdomen (voxel size 28 x 28 x 140 µm, 6 averages, TR 0.5 s, TE 2.6 ms, acquisition time 13 hours); all are in orthogonal perspective, scale bars are 1 mm. A Top view. B Lateral view with ovaries and poison gland coloured (maximum intensity projection). C Anterior to posterior view of the abdomen. D Ventral view of the abdomen (data set interpolated from 61 to 256 slices using the Lanczos method). E Facial view of the head. c = crop; e = eye; l = lancet; lim = longitudinal indirect wing muscle; m = muscle to mouthparts; oc = ocelli; oe = oesophagus; ol = optic lobe; on = optic nerve; ov = ovaries; p = poison gland; pcl = protocerebral lobe; ph = pharynx; pv = proventriculus; sg = suboesophagal ganglion; st = sternites; tg = tergites; v = ventriculus; vim = vertical indirect wing muscle