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.
The Wolf Volcano at Isabela Island -- the largest of the Galapagos Islands west of mainland Ecuador -- erupts Monday, May 25, for the first time in 33 years. Hide Caption. 4 of 22. 22 photos: Recently active volcanoes. The Calbuco Volcano erupts near Puerto Varas, Chile, on Wednesday, April 22.