This 1979 book charts a number of significant advances in our knowledge of the cytology, physiology and biochemistry of the growth of mould hyphae. It is a symposium volume, which includes contributions from leading research workers in the field. The articles concentrate on the detained investigations of a number of well known fungi, including Aspergillus, Neurospora, Mucor, Schizophyllum, Coprinus and Saccharomyces. Not only will it be of great interest to graduate students and research workers in these areas but also to geneticists and developmental biologists concerned with growth processes, especially since a number of these fungi were often employed in such studies.