Describe how an organism is made up of interacting body systems.

In multicellular organisms, the body is a system of multiple, interacting subsystems. Subsystems are groups of cells that work together to form tissues. Organs are groups of tissues that work together to perform a particular body function. Tissues and organs are specialized for particular body functions.

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this protocol provides a detailed procedure for total protein extraction for western blot analysis from achieved samples following trizol isolation of rna.