The following words and terms, when used in these sections, shall have the following meanings, unless the context clearly indicates otherwise.(1) Commission--Texas Animal Health Commission (TAHC).(2) Executive director--The executive director of the commission.(3) Recognized laboratory--A laboratory recognized by the executive director for purposes of this chapter.(4) USDA, APHIS, VS--The United States Department of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services.(5) Veterinary biologics include, but are not limited to--(A) viruses, serums, toxoids, allergins, toxins (excluding substances that are selectively toxic to microorganisms, e.g. antibiotics), and analogous products of natural or synthetic origin;(B) products synthesized or prepared from any type of genetic manipulation, such as diagnostics, reagents, antitoxins, vaccines, bacterins, live microorganisms, killed microorganisms, and genes or genetic sequences; and(C) the antibodies, antitoxins, immunostimulants, and antigenic or immunizing components of microorganisms, intended for use in the diagnosis, treatment, or prevention of diseases in animals.