Algorithms|Caulobacter crescentus|Cell Cycle|Gene Expression Profiling|Gene Expression Regulation|HeLa Cells|Humans|Models, Genetic|Models, Statistical|Oligonucleotide Array Sequence Analysis|Periodicity|Reproducibility of Results|Saccharomyces|Sensitivity and Specificity|Sequence Alignment|Sequence Analysis, DNA|Time Factors|Transcription, Genetic