LOS ANGELES (CBS) — The final witnesses testifying for Dr. Conrad Murray will be fellow doctors. Addiction and propofol experts are expected to testify Thursday.

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The defense has been utilizing a string of witnesses who have testified about Murray’s character.

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Murray wiped tears from his eyes Wednesday as five former patients spoke of his charitable work for the poor, calling him kind and competent.

The prosecution painted Murray as a greedy, reckless doctor who abandoned Michael Jackson and allowed him to die.

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Murray is charged with involuntary manslaughter in the pop star’s 2009 death.