More in Rare Diseases. Essential thrombocythemia (ET) is a rare disorder in which the bone marrow produces too many platelets. ET is part of a category of diseases known as myeloproliferative disorders, a group of disorders characterized by the increased production of a particular type of blood cell. Platelets are the cells responsible for blood clotting which literally stick together at the site of a laceration or injury in order to stop bleeding. 1  In persons with ET, the presence of excessive platelets can be problematic, causing the abnormal formation of clots inside a blood vessel (a condition known as thrombosis).
Jason Bateman. Jason Bateman is an American film and television actor best known for his role as Michael Bluth on the television sitcom Arrested Development (2003), as well as his role on Valerie (1986). He was born in Rye, New York, USA.
The 33-year-old actress was joined at the event by Jason Bateman and his wife Amanda Anka, Chelsea Handler, Tobey Maguire and his jewelry designer wife Jennifer Meyer, Rachel Zoe and hubby Rodger Berman, Kelly Sawyer, Linda Perry and girlfriend Sara Gilbert, Jeremiah Brent and his husband Nate Berkus, Ed Helms, Johnny Knoxville and his wife Naomi Nelson.