Two young boys standing next to each other in front of a fence

Blue background with a circular pattern in the middle

Molecular model of a peptide molecule composed of red

Lush green hillside with a few trees scattered across it

Black and white photo of a lake surrounded by trees and rocks

Old black and white photo of a fountain in front of a building with…

Black and white photo of a woman in a dress sitting on a chair

Black and white photo of a small town with houses

Drawing of a vase on a table