Michigan Compiled Laws, Chapters 760 to 777 Code of Criminal Procedure § 767.19g

Sec. 19g. (1) The testimony of any witness before the grand jury shall not be made available to any person indicted by such grand jury prior to the time of trial of the indictment except as otherwise provided by this section.

(2) After the filing of an indictment returned by a citizen's grand jury but prior to trial, upon motion of the defendant made not later than 20 days after the arraignment of the defendant on the indictment, the trial judge shall direct the prosecuting attorney to furnish to the defendant the testimony which the defendant gave before the grand jury relative to the offense with which he is charged and may direct the prosecuting attorney to furnish to the defendant the testimony which any witness who will testify at the trial gave before the grand jury relative to the offense with which the defendant is charged except those portions adjudged irrelevant, immaterial or excluded for other good cause shown. If the trial judge directs the prosecuting attorney to furnish to the defendant a copy of a witness's testimony, which has been requested in accordance with this subsection, the prosecuting attorney shall furnish such testimony not later than 10 days prior to the time of trial or shall not call that witness to testify at the defendant's trial.

(3) If the trial judge has not directed the prosecuting attorney to furnish a copy of a witness's testimony to the defendant prior to trial, then at such time during the course of the trial when the direct examination of such a witness has been completed, a copy of the witness's testimony before the grand jury relative to the offense with which the defendant is charged, upon the request of the defendant, shall be furnished by the prosecuting attorney to the defendant.