Rafael Ventura
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estudante de ciência da natureza
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8
O tratamento com células-tronco é uma área da medicina que utiliza células capazes de se transformar em diferentes tipos de células do corpo para ajudar a reparar tecidos danificados ou tratar algumas doenças. Atualmente, esse tratamento já é bem estabelecido em algumas situações, como: Leucemias e linfomas, por meio do transplante de células-tronco da medula óssea. Algumas doenças do sangue, como anemia aplástica e anemia falciforme. Certos casos de deficiência do sistema imunológico.
6
o efeito do álcool no corpo humano.
2
A origem do câncer está relacionada ao acúmulo de alterações (mutações) no DNA das células. Essas alterações podem fazer com que uma célula perca os mecanismos normais de controle do crescimento e da divisão, passando a se multiplicar de forma descontrolada. As mutações podem surgir por diferentes causas: Envelhecimento: erros naturais acumulados durante a divisão celular ao longo da vida. Fatores ambientais: tabagismo, radiação ultravioleta (sol), radiação ionizante, poluição e certas substânci
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