Test-Tube Twins Born 18 Months Apart After Freezing

Test-tube sisters conceived simultaneously were born 18 months apart after developing from embryos that were frozen for several months, it was announced today.

Dr. Patrick Steptoe, medical director of the pioneering Bourn Hall test-tube baby clinic near Cambridge, said Mary Wright gave birth to the second sister, Elizabeth Mary, on Wednesday.

The 38-year-old teacher gave birth to her first test-tube daughter, Amy, in October, 1985.

Wright is believed to be the first woman to give birth to two babies conceived at the same time but born more than a year apart after deep freezing.