The brand new author team of Prescott, Harley and Klein's Microbiology continues the tradition of past editions by providing a balanced, comprehensive introduction to all major areas of microbiology. Because of this balance, the Seventh Edition of Microbiology is appropriate for microbiology majors and mixed majors courses. The new authors have focused on readability, artwork, and the integration of several key themes (including evolution, ecology and diversity) throughout the text, making an already superior text even better.