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Biology, 31.07.2019 03:30 idioticeinstein9021

Com o objetivo de testa a eficácia de uma nova vacina contra a doeça chamada febre afetosa vacinoi-se um late de 20 vacas deixando outras 20 sem vacina . após algum tempo, injetou-se em todos as vacos o virus causador da febre aftosa o lote não vacinado constitui

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Com o objetivo de testa a eficácia de uma nova vacina contra a doeça chamada febre afetosa vacinoi-s...
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