Risperdal and Seizures. FDA ALERT [04/2005] Risperdal is a type of medicine called an atypical antipsychotic. FDA has found that older patients treated with atypical antipsychotics for dementia had a higher chance for death than patients who did not take the medicine. This is not an approved use.
Introduction. Chromosomal DNA replication occurs during a phase of the cell cycle known as the S phase. Although the length of the S phase can vary significantly between different cell types, several absolute controls exist that dictate when and how many times in a cell cycle DNA replication can occur.
View Full Document. â¢ During interphase, the chromosomes are duplicated, and this period of DNA replication is called the S-phase (for âsynthesisâ). â¢ Between S-phase and M-phase are gaps, called G 1 and G 2 . Thus, the cell cycle goes G 1 -S-G 2 - M. â¢ The length of the cell cycle can vary enormously.