Understanding what drives cell typing

Scientists know that developing cells in a healthy embryo will transform into a variety of cell types that will make up the different organ systems in the human body, a process known as cell differentiation. But they don't ...

The origin of reproductive organs

Early in human development, during the first trimester of gestation, a fetus may have XX or XY chromosomes that indicate its sex. Yet at this stage a mass of cells known as the bipotential gonad that ultimately develops into ...

New report explores science of interventions to save coral reefs

A new report released by the National Academies of Sciences, Engineering and Medicine stated, while the management of local and regional stressors threatening coral reefs is critical, these efforts on their own will not be ...

Visualizing gene expression with MRI

Genes tell cells what to do—for example, when to repair DNA mistakes or when to die—and can be turned on or off like a light switch. Knowing which genes are switched on, or expressed, is important for the treatment and ...

Researchers develop new tool to check cells' 'batteries'

(Medical Xpress)—Under the microscope, they glow like streetlights, forming tidy rows that follow the striations of muscle tissue. They are mitochondria – the powerhouses of cells – and researchers at the University ...

Aging erodes genetic control, but that's flexible

Biologists at Brown University have found a way to measure the effects of aging by watching the ebb and flow of chromatin, a structure along strands of DNA that either silences or permits gene expression. In several newly ...

page 1 from 2