Macrocytic RBCs are large so tend to have a higher MCH, while microcytic red cells would have a lower value.. MCH is one of three red blood cell indices (MCHC and MCV are the other two). The measurements are done by machine and can help with diagnosis of medical problems.
Alaska's Bogoslof Volcano. Bogoslof volcano, located in the Aleutian Islands about 98 km (61 mi) northwest of Dutch Harbor/Unalaska, is in an active eruption sequence that began in mid-December 2016 and continues today.
Morphologic changes in the size and shape of Bogoslof Island resulting from the eruptive activity of 2016-17 as of January 24, 2017. Island outlines derived from satellite images. Location of the active vent is approximate.(Credit: Christopher Waythomas, U.S. Geological Survey Alaska Volcano Observatory.