aspartylphenylalanine-to-X-14450--phenylalanylleucine ratio
aspartylphenylalanine-to-x-14450--phenylalanylleucine ratio
aspartylphenylalanine-to-X-14450--phenylalanylleucine ratio
aspartylphenylalanine-to-x-14450--phenylalanylleucine ratio