<prompt> All the following features precipitate sickling of HbS except:HypoxiaDehydrationInfectionsAlkalosis  <response>: - Acidosis precipitate the sickling of HbS not alkalosis. - Conditions that precipitate sickling of HbS are: Increase in concentration of the HbS. Acidosis Hypoxia Dehydration. Exercise. infections - Paicularly seen in those organs in which time taken for RBCs to pass through it is more organs having sluggish circulation 