Gene expression during biotrophic growth

Comparison between Ustilago maydis cells grown in axenic culture and U. maydis cells from plant tumors. Keywords: developmental stages U. maydis FB1 cells were grown in axenic culture; corn plants were infected with a mixture of strains FB1 and FB2, and tumors were harvested 13 days post infection. SAmples were taken from two biological replicates each.