In July, Gray was recovering following the medical procedure which involved infusions of billions of her bone marrow cells, which had been edited using the gene-editing technique CRISPR. Her father Timothy Wright (right) traveled from Mississippi to keep her company.

In July, Gray was recovering following the medical procedure which involved infusions of billions of her bone marrow cells, which had been edited using the gene-editing technique CRISPR. Her father Timothy Wright (right) traveled from Mississippi to keep her company.