Animals|B-Lymphocytes|Cell Cycle|Computational Biology|Data Display|Drosophila melanogaster|Electronic Data Processing|Gene Expression Profiling|Gene Frequency|Humans|Information Storage and Retrieval|Lymphocyte Activation|Markov Chains|Models, Biological|Oligonucleotide Array Sequence Analysis|Proteome|Saccharomyces cerevisiae|Sequence Analysis, Protein|Signal Transduction|Software|T-Lymphocytes