Figure 2.

Results of the immunohistochemical protocol in example (a) of the cross-section at the vertebral level L4/5 for the mouse lemur. (b) Magnification of the complementary staining results. (a,b) Left: labelling with the primary anti-fast antibody (i.e. fast fibres are brown), right: labelling with the primary anti-slow antibody (i.e. slow fibres are brown). (c) Schematic illustration of the segregation of slow and fast fibres (colour-coded as indicated in the legend) to allow for the interspecific comparison illustrated in Fig. 5. Muscle abbreviations: ilc, m. iliocostalis; im, mm. intermammillares (et mammilloaccessorii); is, mm. interspinales; lo, m. longissimus lumborum; m, m. multifidus; pmj, m. psoas major; pmn, m. psoas minor; q, m. quadratus lumborum; r, mm. rotatores; s, m. sacrocaudalis.