Polarized views unchanged

Polarized views

One can almost feel the strain as a newt lung epithelial cell (top left) undergoes mitosis. The white spindle fibers anchor the chromosomes (visible in outline) between the spindle poles, while kinetochore microtubule fibers connect each chromatid at its centromere to one of the mitotic poles. Elongated mitochondria, long stress fibers and small, spherical organelles can also be seen surroundin...

Polarized Cells, Polarized Views: Asymmetric Cell Division in Hematopoietic Cells

It has long been recognized that alterations in cell shape and polarity play important roles in coordinating lymphocyte functions. In the last decade, a new aspect of lymphocyte polarity has attracted much attention, termed asymmetric cell division (ACD). ACD has previously been shown to dictate or influence many aspects of development in model organisms such as the worm and the fly, and to be ...

Exclusive breastfeeding recommendation unchanged.

Editor – The secondary analysis published in the article by Bahl et al. in the June 2005 issue of the Bulletin (1) confirms the strong protective effect of breastfeeding against death among infants in Ghana, India and Peru, where infant mortality due to infectious disease is high. The strength of this protective effect is somewhat larger than that observed in the pooled analysis of three smalle...

Microstructural Analysis of Human White Matter Architecture Using Polarized Light Imaging: Views from Neuroanatomy

To date, there are several methods for mapping connectivity, ranging from the macroscopic to molecular scales. However, it is difficult to integrate this multiply-scaled data into one concept. Polarized light imaging (PLI) is a method to quantify fiber orientation in gross histological brain sections based on the birefringent properties of the myelin sheaths. The method is capable of imaging fi...

Acute spinal cord injury - the unchanged challenges!