I didn't really teach as such, but was in research until '98 .... the area of "biochemical engineering" working with enzymes from extremophiles, cloned and expressed as fusion proteins in
E. coli ... so all the standard molecular biology stuff with plasmid DNA in
E. coli, as well as a lot biochemistry and chem eng stuff on purification and analysis.
Was also paid to demonstrate undergrad labs, mark their reports, and to teach maths problem classes to chem eng undergrads lacking knowledge (complex numbers, differential equations etc) due to rubbish A Levels that had a great deal of content hacked off the syllabus. Had undergrad project students working in the lab .... = practical training/ experience and a mini research project for them, and an extra pair of hands for us, apart from one or two Frank Spencers
.
Now in the life sciences industry involved in various products and services for research.