If you buy Antibodies supplied by MyBioSource they should be stored frozen at - 24°C for long term storage and for short term at + 5°C.HRP conjugates are often primary rabbit polyclonal antibodies couples to the enzyme horseradish peroxidase (HRP), found in the roots of horseradish. Also monoclonal HRP conjugates are often used for Western Blot.
The receptors are ligand binding factors of type 1, 2 or 3 and protein-molecules that receive chemical-signals from outside a cell. When such chemical-signals couple or bind to a receptor, they cause some form of cellular/tissue-response, e.g. a change in the electrical-activity of a cell. In this sense, am olfactory receptor is a protein-molecule that recognizes and responds to endogenous-chemical signals, chemokinesor cytokines e.g. an acetylcholine-receptor recognizes and responds to its endogenous-ligand, acetylcholine. However, sometimes in pharmacology, the term is also used to include other proteins that are drug-targets, such as enzymes, transporters and ion-channels.