Michael Ghil, Mickaël D. Chekroun and Dmitri Kondrashov Dept. of Atmospheric & Oceanic Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 603 Charles E. Young Dr., East, 3845 Slichter Hall Los Angeles, CA 90095-1567 Ghil phone: (310) 825-1038 fax: (310) 206-5219 email:[email protected] Chekroun phone: (310) 825-1038 fax: (310) 206-5219 email:...

Michael Ghil, Mickaël D. Chekroun and Dmitri Kondrashov Dept. of Atmospheric & Oceanic Sciences and Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 603 Charles E. Young Dr., East, 3845 Slichter Hall Los Angeles, CA 90095-1567 Ghil phone: (310) 825-1038 fax: (310) 206-5219 email:[email protected] Chekroun phone: (310) 825-1038 fax: (310) 206-5219 email:...

A boy with no previous history of bleeding presented with ecchymoses and splenomegaly. He was followed up for thrombocytopenia and micromegakaryocytes for 20 months till clinically malignancy was diagnosed. Micromegakaryocytes must always be treated with suspicion, as they may provide an important clue for dyshematopoesis.

MicroRNAs (miRNAs) are extensively involved in diverse biological processes. However, very little is known about the role of miRNAs in mediating the action of thyroid hormones (TH). Appropriate TH levels are known to be critically important for development, differentiation and maintenance of metabolic balance in mammals. We induced transient hypothyroidism in juvenile mice by short-term exposur...