Time can be divided into historical periods. The ancient world, up to the fall of the Roman Empire, was very important to the study of medicine but it is not part of this thematic study. The four ...

Light passes through the eyeball to the retina. There are two main types of light receptors called rods and cones. Rods are more sensitive to light than cones so they are useful for seeing in dim ...

Move over karyotypes—genetic disorder detection has vastly improved. Researchers are now using array CGH (aCGH), to quickly scan through an entire genome for imbalances. Because aCGH facilitates ...