Which kind of tissue is designed to regulate temperature, secrete, lubricants and protect the body from harmful substances?

Approximately hiw many new case of sti occur in the united states

Chronic illness it is a permanent change ? true/false

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?