Application of liposomes in medicine
Bovine liver powder
Cholesterol, is a derivative of cyclopentanoperhy drophenanthrene, widely present in
Uncover the microcosm of the eggshell
Eggs are known to us as chicken eggs and food, and are mainly composed of three parts: eggshell, egg white and egg yolk. Next, let Dabai, who loves to eat eggs, use the scanning electron microscope to explore the mysteries of egg shells with everyone.