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Science behind cell size: to get big, make more DNA?
Despite the staggering range of size of cells in our bodies, choose just one type, and you will find that cells are more or less the same size. Somehow, cells in our body seem to know what size to reach and know how to maintain themselves at that size. But how?
SEEING IS BELIEVING: FLUORESCENCE
Fluorescence generates vibrant colors that allows us to tell one cell from another, and even one biomolecule from another. This has led to great advances in our understanding of immunology by allowing us a peek into biological interactions at the cellular level.
THE ADAPTIVE IMMUNE SYSTEM: ATTACK OF THE CLONES
Your body is tasked with fighting off hordes of microbes each day. So how does it keep you healthy? Your adaptive immune system plays a key role. It has two key features that work to keep your body free of foreign invaders: specificity and memory.
BIOLOGY'S NEXT TOP MODEL: ORGANOIDS
Human beings make for great scientists, but crummy biological test subjects. Think about it for a minute—if you were a researcher, how would you study an organism that is genetically diverse and takes decades to mature? These are only a couple of the many challenges that biologists face when studying human health and disease.