X-radiograph(s) of "Madonna, Child and St. John"

X-Radiograph Description: X-Radiograph X-Radiograph Settings: 5 ma, 45 kv, 45 sec.; 5 ma, 45 kv, 60 sec.; 5 ma, 45 kv, 75 sec. Burroughs Number: 4220 X-Radiograph(s) of: Artist: Follower of Parmigianino ? Title: Madonna, Child and St. John Description: Oil on Poplar Owner: Boston College Object Number: 31608.1