BACKGROUND AND OBJECTIVES The regulation of hematopoiesis by marrow stroma in vitro, has been shown to be abnormal in some patients with myelodysplastic syndromes (MDS). This study was performed to assess whether a range of mechanisms may be altered within the MDS microenvironment. DESIGN AND METHODS The effects of diffusible factors produced by normal or MDS stromal layers on hematopoietic c...

• With tlie development of techniques for measuring cell volume and plasma volume separately, it has been shown that the percentage of blood cells in the overall circulation, including small as well as large vessels, is lower than that in the blood of only the large vessels, i.e., the arteries or veins. The Fci-i is value (overall cell percentage/large vessel cell percentage) averages 0.91 in m...

In our previous studies, we noted a non-uniform distribution of protein tracer preferentially entering the anterior stromal lamellae of the cornea from the limbus. Given other differences reported previously between the anterior and posterior lamellae of the cornea, and the number of corneal disorders in which abnormalities are preferentially confined to either the anterior or posterior lamella...

• With tlie development of techniques for measuring cell volume and plasma volume separately, it has been shown that the percentage of blood cells in the overall circulation, including small as well as large vessels, is lower than that in the blood of only the large vessels, i.e., the arteries or veins. The Fci-i is value (overall cell percentage/large vessel cell percentage) averages 0.91 in m...