he proved important results in this area such as the biholomorphic embedding theorem for a stein manifold as a closed submanifold in cn, and a new proof of remmert's proper mapping theorem.

Write the above sentence using proper case.
He proved important results in this area such as the biholomorphic embedding theorem for a Stein manifold as a closed submanifold in Cn, and a new proof of Remmert's proper mapping theorem.