Biotinylated erythropoietin [letter; comment]

Detection and isolation of the erythropoietin receptor using biotinylated erythropoietin.

Procedures have been developed to label human erythropoietin (Ep) with biotin to detect and isolate the Ep-receptor. The labeling method used the abundant carbohydrate groups on Ep and resulted in biologically active biotin-Ep (b-Ep) containing 8 to 10 biotins per Ep molecule. Specific binding of b-Ep to cells from spleens of mice made anemic by phenylhydrazine injections was demonstrated using...

Environmental gamma radiation: a comment (Letter to the Editor)

Editor, I read the recent publication by Toossi et al. with a great interest (1). Toossi et al. concluded that “Average gonad and bone marrow doses for North Khorasan, Boshehr and Hormozgan provinces were less than the corresponding values for normal area (2).” There are some facts on this report to be concerned. I agree that the detected levels might be high in the mentioned area, but th...

Reply to the Letter to the Editor: "A peripheral comment".

Comment on letter to the editor: magnocellular reading and dyslexia

In his letter to the editor, Skottun (2003) emphasized two different questions about magnocellular reading and dyslexia: (1) does the magnocellular (M) pathway have a role in reading; and (2) does a M-deficit causes developmental dyslexia? We examined the first question––can the magnocellular pathway read? This question takes on a special importance in the study of developmental dyslexia. Some ...

LETTER TO THE EDITOR Comment on Genetic Similarity Theory

Genetic similarity theory, a purported extension o f the concept o f inclusive fitness, is not only unnecessary, but also logically flawed. In this paper, the author (1) discusses the definition o f inclusive fitness; (2) identifies the major logical f law of genetic similarity theory; and (3) refers readers to earlier, more thorough discussions o f several common misunderstandings o f kin sele...