Which of the following are examples of altruism? 
Definitions:
Glioblastoma
A highly aggressive and the most common primary malignant brain tumor in adults, characterized by rapid growth and invasion into adjacent brain tissue.
Least Differentiated
Refers to cells or tissues that have the lowest level of specialization, often found in early developmental stages or certain types of cancer, where cells lose their specialized functions.
Differentiated
The process by which cells or tissues undergo a change toward a more specialized form or function, often in the context of cell biology and cancer research.
Disseminated
Spread or scattered widely across a body part or throughout the body, often referring to infections, diseases, or substances.
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