the somatic cell hybrid method has been used to study the number and different types of human genes involved in the expression of adenosine deaminase ( ada ; adenosine aminohydrolase , ec 3.5.4.4 ) in normal cells and cells from a patient with ada-deficient severe combined immunodeficiency disease ( scid ) .
C0001457
adenosine aminohydrolase
C0085110
severe combined immunodeficiency disease