english: And what was remarkable about it was in the past when we think of chemical messengers within the body, we thought of complicated things like estrogen and insulin, or nerve transmission.
non_english: Ve ilginç olan şu, geçmişte kimyasal mesajcılar dediğimizde kapsamlı şeyler düşünürdük; östrojen, insülin gibi ya da sinir sitemi.