Surfactant is a complex substance containing phospholipids and a number of apoproteins. This essential fluid is produced by the Type II alveolar cells, and lines the alveoli and smallest bronchioles.
William and Anne Shakespeare had three children. Their first child was Susanna, born a mere six months after the wedding of her parents. She was christened on May 26, 1583, and twins arrived in January, 1585.
Hamnet died at age 11 and a half. Judith married Thomas Quiney in 1616, and the couple had three sons: Shakespeare Quiney, who died in infancy, and Richard and Thomas, who both died in 1639 within a month of each other. Since neither of the boys married, there is no possibility of any legitimate descendants from Shakespeare's line.