--subdivisions Metabolism--Regulation, Secretion--Regulation, and Synthesis--Regulation under individual chemicals and types of chemicals, e.g. Copper--Metabolism--Regulation; Copper--Secretion--Regulation; Insulin--Synthesis--Regulation; and subdivision Vocalization--Regulation under individual animals and groups of animals, e.g. Mammals--Vocalization--Regulation; Cattle--Vocalization--Regulation
Biological Electronics -- See Electronics in biology Here are entered works on the application of electronic devices in biology. Works on electronic phenomena occurring in biological systems are entered under Bioelectronics.
Biological Evolution -- See Evolution (Biology) Here are entered works on biological evolution. Works on the general concept of evolution are entered under Evolution. --subdivision Evolution under individual animals and groups of animals and under individual organs and regions of the body, e.g. Cattle--Evolution; Fishes--Evolution; Heart--Evolution