Materials and methods of the digital image analysis and mathematical modeling of hyphal elongation, branching and pellet formation as well as their application to various fungi and actinomycetes during the production of antibiotics and enzymes are presented.

Contributions by: K.-H. Bellgardt, S.R. Gerlach, R. King, P. Krabben, J. Nielsen, G.C. Paul, M.-N. Pons, K. Schügerl, D. Siedenberg, C.R. Thomas, H. Vivier