INDIANAPOLIS (AP) — Indiana University intends to sue to try and block a new state law mandating that aborted fetuses be buried or cremated after a federal judge blocked its bid to join an existing lawsuit.

IU spokeswoman Margie Smith-Simmons says the law due to take effect July 1 would institute “sweeping and unconstitutional prohibitions” on acquiring and sharing fetal tissue that would hurt its ability to conduct research into Alzheimer’s and other neurological diseases.

U.S. Magistrate Judge Debra McVicker Lynch said in her ruling Tuesday that IU could bring its claims in a separate lawsuit, and Smith-Simmons says IU intends to do so immediately.

Lynch denied IU’s bid to intervene in a complaint filed by Planned Parenthood of Indiana and Kentucky, saying it would “unnecessarily complicate it” and possibly delay a resolution.