Juvenile dermatomyositis causes muscle weakness and skin rashes in children. Learn how it's diagnosed, what the autoantibody subtypes mean, and how it's treated.
Myrrh comes from small thorny trees in the Commiphora genus. Learn how the resin is harvested, what makes it biologically active, and how it's used today.
A baby's gut develops gradually from birth through toddlerhood. Here's what's ready at birth, what takes months or years, and why timing matters for feeding.