Final answer:
Max Perutz and John Kendrew were the first to determine the crystal structure of myoglobin using X-ray crystallography.
Step-by-step explanation:
In the field of biology, Max Perutz and John Kendrew were the first to determine the crystal structure of myoglobin. They used a technique called X-ray crystallography to study the arrangement of atoms in myoglobin, a protein found in muscle tissue. Their work provided important insights into the three-dimensional structure of proteins.