A baby believed to be the world's smallest to survive has been allowed home after six months of hospital care.
Rumaisa was just nine inches long
Rumaisa Rahman was born weighing 8.6 ounces (244 grams) at the Loyola University Medical Center outside Chicago in September.
She was delivered by Caeserean section along with her twin sister, Hiba, who was only slightly bigger.
Doctors say she has made very good progress, and is expected to lead a normal life.
The twins were delivered 14 weeks early at just 26 weeks' gestation after their mother Mahajabeen Shaik developed pre-eclampsia - high blood pressure which can lead to a fatal complication.
Ms Shaik and her husband, Mohammed Abdul Rahman, are originally from Hyderabad, India.
Rumaisa, who was just 9.5 inches (24cm) long at birth, now weighs 5lbs 8oz (2.49kg) and has almost doubled in length.
A hospital spokesman said she still requires around-the-clock oxygen.
This is common for premature babies, as their lungs have not developed properly at birth.
Rumaisa was introduced to the world in December
However, it is hoped that Rumaisa will be gradually weaned from the oxygen tank.
Hiba, who weighed 1lb 4oz at birth, went home from hospital in early January.
Both girls have undergone laser surgery to correct vision problems that are common in premature babies.
Records suggest that between 1936 and 2005 just 62 babies survived after being born weighing less than 13oz.