There are classes offered in the Netherlands.  Try this web site:
http://www.hbtc.nl   The dates listed are for this year but much the same
classes will be offered next year.  I have attended one of the classes and
found it to be very educational and the school and course to be very well
organized.

Jennifer MacDonald

anybody in the UK suggest good beginners, intermediate or advanced courses
 in both immunocytochemistry and in situ hybridisation.