| |
Figure 5. Pairs of photographs, taken of the same microscopic fields, showing the positional relationship between the DA neurons (left) and the TF&4-labeled cells (right). A and B, A coherent pattern after Dl. 1.1 injection. The TRA cell clone overlaps the TH nucleus so that all but one (open arrows) of the TH cells in the nucleus are double labeled. III, third ventricle. C and D, TRA-labeled and unlabeled cells are intermixed extensively after D 1.2 injection. On this section, only one cell (arrows) is double labeled, but in the entire DA nucleus nine cells were labeled. E and F, TRAlabeled cells are scattered among unlabeled cells after D 1.1.1 injection. In most of the sections of scattered clones, there are no double-labeled cells. In this embryo, there were two double-labeled cells, one of which appears in this section (arrows). ZZZ, third ventricle. Scale bar, 25 um. |
