||Fig. 7. Xefiltin (A,D), XNIF (B,E), and NF-L (C,F) mRNA expression
in midbrain structures. A–C: Deep layers of the lateral optic
tectum, from the upper boxed region shown in Figure 4D. XNIF (B)
and NF-L (C) staining were intense in some cells and light in others,
whereas that of xefiltin (A) appeared lighter and more homogeneous.
Layers of the tectum are numbered in A. D–F: Cells from the area of
tegmentum that is surrounded by the lower box in Figure 4D. Neurons
in these regions generally expressed comparable levels of mRNAfor all
three of the low molecular weight nIF proteins, although labeling was
heterogeneously distributed among individual cells. Abbreviations are
as in Figure 4D. The scale bar 5 70 μm in A, applies to all panels.