Which is the for the nine amino aids that the body cannot manufacture?

The nine essential amino acids that the body cannot manufacture are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. These amino acids must be obtained through diet, typically from protein-rich foods such as meat, dairy, eggs, and certain plant sources like quinoa and soy. They play crucial roles in various bodily functions, including protein synthesis, hormone production, and immune response.