A newly discovered gene, MAD2, acts as a checkpoint in the cell cycle, ensuring chromosomes are ready to separate properly before cell division. Blocking the gene's activity can lead to tumor growth due to haphazard cell division and missing chromosomes.
Researchers have discovered that cholesterol molecules facilitate hedgehog protein function by causing its split and acting as an anchor, highlighting the importance of cholesterol in developmental processes.
A clinical trial by investigators at the Johns Hopkins Children's Center found that teenage girls with iron deficiency performed significantly better on verbal learning tests than those who took a placebo. The study suggests that even in the absence of anemia, iron deficiency may impair learning in adolescent females.