Exoskeleton - An external skeleton that protects and supports an organism, in contrast to an internal endoskeleton.⏎
Fertilized Egg - Sometimes referred to as a zygote, this is the resulting initial cell formed when a sperm cell unites with an egg cell.⏎
Cirrhosis - A condition caused by chronic liver disease characterized by the development of scar tissue leading to a loss of liver function.⏎
Genetics - A branch of biology that studies heredity and variation in organisms.⏎
Disease - Any abnormal condition that affects all or part of an organism, resulting in symptoms such as pain or loss of function.⏎