If a new anti-cancer drug is found effective in initial tests with mice, what do researchers conclude?
(a). If the drug was effective in a large number of mice, it will therefore be effective in humans.
(b). If the drug was effective in a small proportion of mice, it will be effective in a small proportion of humans.
(c). The mice have provided a positive control in this experiment that proves the drug is effective in humans.
(d). The drug is effective in the mouse model; it must still be tested in humans.
(e). The effect of the drug on mice has no bearing on the effect of the drug on humans.
Answer: (d). The drug is effective in the mouse model; it must still be tested in humans.
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