Effect of melatonin treatment on the developmental potential of parthenogenetic and somatic cell nuclear-transferred porcine oocytes in vitro.$ \8 E, _& b. G! V# }) T# v& G7 q
. x$ L. Q! j2 r; w C( l http://www.ncbi.nlm.nih.gov/pubmed/21729374?dopt=Abstract