"Old Masters" such as Leonardo da Vinci, Sandro Botticelli and Rembrandt may have used proteins, especially egg yolk, in their oil paintings, according to...
A historic document signed by King Charles II, which helped complete the restoration of the British monarchy after the English Civil War, is up for auction and expected to fetch up to £600,000 ($749,000).
"Old Masters" such as Leonardo da Vinci, Sandro Botticelli and Rembrandt may have used proteins, especially egg yolk, in their oil paintings, according to...