Fig. 1: Sandro Botticelli, The Lamentation of Christ, c. 1490/95, 140 × 209.2 cm, Bavarian State Painting Collections, Inv. No. 1075.
From: A holistic view on the role of egg yolk in Old Masters’ oil paints

Although the flesh and some draperies are painted in egg tempera, the grass foreground and the stone tomb background are painted with oil paints containing proteins. © Bavarian State Painting Collections, Munich.