Albumin concentration in human amniotic fluid from normal pregnancies.
The present study is an attempt to estimate the albumin concentration in the human amniotic fluid of normal pregnancy. The study has been conducted from 12th to 20th week and from 30th to 43rd weeks of gestation. The results revealed a characteristic gestational profile with an increase in the concentration with the advancement of pregnancy from the 12th till the 20th week and an inverse relationship between the albumin level and the gestational age after the 30th week till term. The relationship between the albumin levels and the order of pregnancy indicated that the albumin concentration was not influenced by the birth order.Since October 10, ISIS and its sympathizers around the world have killed at least 525 people in six attacks in six countries outside its so-called caliphate.

American counterterrorism officials say that of the six attacks, three were directed by ISIS from its territory in Syria and Iraq and another two were so-called "announcement" attacks — local ISIS elements revealing their existence in dramatic fashion.

Full Coverage: San Bernardino Shooting Massacre

Though one of the two people who carried out the final attack, the massacre in San Bernandino, swore allegiance to ISIS, officials are still determining the extent of any relationship she and her husband might have had with the terror group.

Here is the chronology and body count of the attacks, with U.S. intelligence analysis of who was behind each:

—Oct. 10: The