Rotate the objective lenses so that the low-power, eg x10, is in line with the stage. Image caption, Turn the coarse focus so that the stage is as close to the objective lens as possible. You should ...

Carl Strüwe took only two kinds of photographs. The first was typical enough: Italian sculpture and architecture he saw on vacation. The second was far less typical: close-ups of diatoms, butterfly ...

Every exquisite drawing by Santiago Ramón y Cajal, the founder of modern neuroscience, is marred by a curious mark. Here is the little-known story behind it. Working alone at the turn of the 20th ...

This is a pyramidal neuron, so named for the pyramid-shaped body at the center of this drawing, from the cerebral cortex of a human. This outermost layer of the brain integrates information from ...