Cichoric acid is the main phenolic compound in the root and rhizome of the medicinal part, Echinacea purpurea that is known for possessing immune enhancing characteristics. In this study, we analysis the the synthesis and storage sites of phenolic compound in E. purpurea. We used fluorescent microscopy, transmission electron microscopy, cytochemical and immunocytochemical localization to observ...

It has recently been shown that bacteria and viruses can be delivered to the brain parenchyma without evoking an immune response. These experiments demonstrate that there are no cells within the brain parenchyma that can initiate a primary immune response, and that the drainage of pathogens from the brain parenchyma is distinct from that documented for soluble proteins. A persistent pathogen in...

Observations of fixed parenchyma cells using electron microscopy were carried out in an attempt to understand the morphogenetic process of blastema formation in regenerating planarians. Fixed parenchyma cells could be found throughout one-day blastemata. In the mid-blastema region where migrating regenerative cells build up a compact cell aggregate, long and slender cytoplasmic processes of the...

BACKGROUND Lung parenchyma segmentation is often performed as an important pre-processing step in the computer-aided diagnosis of lung nodules based on CT image sequences. However, existing lung parenchyma image segmentation methods cannot fully segment all lung parenchyma images and have a slow processing speed, particularly for images in the top and bottom of the lung and the images that cont...