Early Developmental Brain Grown In Laboratory; Implications For Treating Developmental Disorders and Testing Drugs Seen

Miniature Human Brain Grown In Lab by James Gallagher.  BBC News Health.  August 28, 2013.  

(1)  The structures grown in the lab reached the same level of development as ______________________________________,

(2)  _____________ or ________________________ were used to produce the part of the embryo that develops into the brain and spinal cord, ______________.  

(3)  The organoids are, according to one of the researchers, good for ___________-_-----------.

(4)  The structures could be used to replace ____________ in drug research.  

(5)  The breakthrough has already been used to investigate a disease called____________.