Michael Jackson's Family: Who Is, Isn't Attending Conrad Murray Trial

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Janet Jackson and Randy Jackson leaving the courthouse

Katherine Jackson tears up, while Joe Jackson reportedly appears to sleep for a bit as testimony is heard in a Los Angeles courtroom.

Tuesday marked the second day in the manslaughter trial of Conrad Murray, the doctor accused of killing Michael Jackson.

In the Los Angeles courtroom, the second row of the spectators' gallery has been reserved for the King of Pop's family, but not all of his immediate relatives have appeared yet.

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Among those present for both days are his mom, Katherine, and sisters Janet, LaToya and Rebbie, according to the Wall Street Journal.

Jackson's dad, Joe, and brothers Jermaine and Randy have been present most of the time.

His brothers Tito, Marlon and Jackie have yet to make an appearance.

According to the Journal, Jackson's sisters can be heard often repeating witness testimony to their mom, who teared up when the prosecution played audio of Jackson slurring his words apparently due to the effects of the surgical anesthetic propofol.

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She also was heard "harrumphing incredulously" as defense lawyer Ed Chernoff gave his opening statement painting his client in a positive light.

Meanwhile, Joe Jackson at one point during testimony from AEG's Paul Gongaware closed his eyes briefly and appeared as if he might be sleeping, the Journal reported.

Also testifying during the trial was director-choreographer Kenny Ortega, who was working with Jackson on London concert series when the singer died in July 2009. As he wrapped his testimony, Randy Jackson gave him the "V" for victory -- sign, which Ortega acknowledged with a nod.

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Other witnesses have included Kathy Jorrie, a lawyer hired by AEG; Jackson's personal assistant, Michael Emir Williams; and Jackson's head of security, Faheem Muhammed.

If Murray is convicted of involuntary manslaughter, he could be sentenced to four years in a California prison and lose his medical license.