"2007Z"^^ . "Hay, Betty"@en . . "2007-08-20Z"^^ . "1927Z"^^ . "Elizabeth Dexter \"Betty\" Hay (April 2, 1927\u2014August 20, 2007) was an American developmental biologist best known for her work in studying the interactions between cells and extracellular matrices, epithelial\u2013mesenchymal transitions, and limb regeneration."@en . . "Developmental biologist" . . . . . "1927-04-02Z"^^ . . . "Elizabeth Dexter \"Betty\" Hay"@en . . . .