Below are a collection of excerpts from biomedical research articles. Excerpts are separated by newlines. Your task is to answer a question based these excerpts. Your response should be formatted as a `json` array.

For instance, given excerpts from articles studying breast cancer, and the question "what are some common genes associated with breast cancer?", an answer might be formatted like: ["BRCA1", "BRCA2", "TP53", ...]. Only include answers that are mentioned in the provided exerpts. The array should always have at least one answer; do not respond with an empty array []. Do not include any text in your response other than the answer array.

Context: Mucins, as the major salivary proteins
the two thirds of identified spots corresponding to amylases, cystatins and immunoglobulins
several protein spots of immunoglobulin chains
The concentration of total protein and salivary amylase was significantly lower in NWS and SWS of psoriatic patients compared to the healthy control.

Question:
List the main proteins found in human saliva.
["Amylases", "Cystatins", "Immunoglobulins", "Mucins"]