Trayvon Martin's mother took the stand this morning in the murder trial of George Zimmerman, who faces second degree murder charges for shooting the teenager last year.

Moments before she began her testimony, Sybrina Fulton tweeted, "I pray that God gives me strength to properly represent my Angel Trayvon. He may not be perfect but he's mine. I plead the blood of Jesus for healing."

Fulton and Tracy Martin, Trayvon Martin's father, have been present every day of the trial and endured testimony about the shooting and their son's wound that at times have prompted them to abruptly leave the courtroom