May have been the biggest collision in the milky way

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Control

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Cell

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 Cell Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells have many parts, each with a different function.   The Four Main Types of Cells Epithelial Cells. These cells are tightly attached to one another. Nerve Cells. These cells are specialized for communication. Muscle Cells. These cells are specialized for contraction. Connective Tissue Cells.   Human body averages 37.2 trillion cells. This is not a final number, but it's a very good start. While it's true that people may vary in size. ovum The largest cell is ovum in the human body. The ovum also called egg cell is the reproductive cell in the female body. Ovum is 20 times bigger than the sperm cells and has a diameter of about 0.1 mm.
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Lab

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