Selective Advantage of the Sickle-Cell Trait

Selective advantage of the sickle-cell trait.

tories; (ii) fights limited to two males; (iii) incessant barking by established territorial males; (iv) the use of physical force for displacement of an opponent; (v) the stereotyped boundary ceremony; (vi) the intrusion of smaller males into the resident male's territory so long as they maintain silence and remain visually inconspicuous; and (vii) interference by a dominant bull in "noisy squ...

Sickle cell trait.

Sickle cell trait can pose a grave risk for some athletes. In the past few years, exertional sickling has killed nine athletes, including five college football players in training. Exercise-physiology research shows how and why sickle red cells can accumulate in the bloodstream during intense exercise bouts. Sickle cells can "logjam" blood vessels and lead to collapse from ischemic rhabdomyolys...

Pre-marriage Sickle Cell Screening Program in South Region of Iran, A Pilot Study on 50 Cases of Sickle Trait

Background: Studies have demonstrated that sickle cell trait can be found in an asymptomatic healthy carrier with normal complete blood count (CBC) and red blood cell (RBC) indices. According to Iranian Ministry of Health bulletin instructions, prenuptial Thalassemia Screening Program (TSP) primarily depends on RBC indices which are measured through a routine CBC. Only when these levels are bel...

Sickle cell trait and frostbite.

The sickle cell trait in Jamaica.

J A? IAI(’A, the largest of the British West Indian islands, was originally inhahitated by primitive Amerindians know’n as Arawaks, who dwindled to insignificatit numbers during the one hutidred and sixty-one years of Spanish rule which follow-ed the discovery of the Island in 1494. During the 17th atid 18th centuries, the British and Spanish planters, w-ho had originally settled Jamaica, impor...