Pattern formation is the developmental process by which cells acquire different identities, depending on their relative spatial positions within the embryo. Pattern formation ensures that tissues and ...

Yellowing of the skin, known as jaundice, is a common condition with newborns, which usually resolves as the baby’s liver develops. However, with adults, yellow skin can be a symptom of several ...

Yellow nails can be caused by nail polish, smoking, and fungal infections. Medical conditions like diabetes and thyroid disorders can also cause yellow nails. If you have unexplained yellow nails, see ...

Yellow toenails are most often caused by a fungal infection. Fungal toenail infections are more common if you have a history of athlete's foot or wear poorly ventilated shoes. Yellow toenails can also ...