Close-up of a small purple lump on an infant boy's head; the bump is surrounded by long, dark hairs, while the rest of the child's head has lighter, shorter hairs. Close-up of a small purple lump on ...

Bumps are a key component in many advanced packages, but at nanoscale levels making sure all those bumps have a consistent height is an increasing challenge. Without co-planarity, surfaces may not ...

The cause of the boy's lump is unknown, although doctors suspect it could be an unusual symptom of a neural tube defect. When you purchase through links on our site, we may earn an affiliate ...