Answer: Adipose tissue is also called fat tissue. It is found under theskin, around organs such as the eyes and kidneys, on the surface ofthe heart, around certain joints, and in some abdominal members asan "apron" over the abdominal organs. Your skin has three layers.Epidermis, dermis, and hypodermis. Adipose tissue is in thehypodermis.
Answer: None, there are no cells in Tissue fluid (interstitial fluid) although it does consist of solvent containing amino acids, sugars, fatty acids, coenzymes, hormones, neurotransmitters, salts, as well as waste products from the cells!
Answer: For one, your DNA, and whatever else might be left in your mouth at the time. So, either some kind of virus or something, or some chemical left in your mouth, but if you are being tested with a swab in your mouth, then they are probably looking for drugs.