Fig. 9. (A) Changes of average anti-5-HT immunofluorescence in the anterior
neurones of Helisoma, after 6 hours of incubation with 5-HTP and
-m-T; normalized to controls. (B) Changes of average glyoxylic
acid-induced fluorescence of catecholamines in the anterior neurones of
Lymnaea after 6 hours of incubation with CW, L-DOPA and
-m-DOPA normalized to controls. *Significantly different
from control, P<0.05. (C) Representative micrographs of glyoxylic
acid-induced fluorescence in the anterior neurones of Lymnaea,
showing increase after incubation with L-DOPA, and reduction after incubation
with
-m-DOPA. Scale bar: 20 µm.