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Phineas Gage neuroscience case: True story of famous frontal lobe patient is better than textbook accounts.

1 From a virtuous foreman to a sociopathic drifter<p>On Sept. 13, 1848, at around 4:30 p.m., the time of day when the mind might start wandering, a …

Epigenetics 101: a beginner’s guide to explaining everything

Epigenetics is one of the hottest fields in the life sciences. It’s a phenomenon with wide-ranging, powerful effects on many aspects of biology, and enormous potential in human medicine. As such, its ability to fill in some of the gaps in our scientific knowledge is mentioned everywhere from …

RNA's Secret Life Outside the Cell

For decades, researchers have been finding DNA and its sister, RNA, circulating in the body, outside the safe interior of cells where these molecules …

How the Brain Creates Personality: A New Theory

Are you a mover, a perceiver, a stimulator, or an adapter? Modes of thinking can be understood in terms of how the top and bottom—rather than right and left—parts of the brain interact.<p>It is possible to examine any object—including a brain—at different levels. Take the example of a building. If we …

Build an atom, complete with protons, neutrons and all requisite orbitals and electron spins. A pretty little look at the idealized, not-to-scale world of the elements. Great for a chemistry or physics reference anyway. That’s helium, carbon, iron and livermorium for those of you keeping track at home. Interested in a diagram of an atom that’s more to scale? Get yourself an 11-mile wide computer monitor and head over to this site. EDIT: An earlier version of this post said hydrogen instead of helium, because I’m a dummy and I was in a hurry.

<b>Build an atom</b>, complete with protons, neutrons and all requisite orbitals and electron spins. A pretty little look at the idealized, not-to-scale …

Neutrons

X doesn't mark the spot: real shape of chromosomes revealed

Time to revise the high school biology textbooks: contrary to their typical portrayal as being precisely X-shaped, chromosomes are in fact much more complex — and much messier looking. That's the finding of a new project that relied on DNA sequencing to produce accurate 3D images of chromosomes.<p>A …

7 Classics Every Doctor Should Read

A reminder to think beyond textbooks and journals; to always be a student of the human condition<p>As the odds against future physicians learning everything about the human body have climbed toward absurdity, the need to concentrate on the essentials of medical education has intensified as never …