Biological nitrogen (N2) fixation is the primary input of new nitrogen (N) to marine systems, and is important in meeting the N demands of primary producers. In this study, we determined whether restoration of the eelgrass Zostera marina L. in a shallow coastal bay facilitated increasing rates of N2 fixation as the meadows aged. Rates of N2 fixation were measured in a system that had been devoi...

This investigation focused on the role played by cold-insoluble globulin (CIg, plasma fibronectin) in monocyte function. Surface-bound CIg mediated a concentration-dependent of human blood monocytes to gelatin-coated surfaces. CIg also mediated the binding of gelatin-coated particles such as latex beads or tanned erythrocytes to surface-bound human monocytes. However, CIg did not mediate partic...

We have cloned a Xenopus cDNA that is related to snail, a gene that is required for mesoderm formation in Drosophila. The cDNA encodes a protein that contains five zinc-fingers that closely resemble those of snail. In the non-canonical parts of the DNA-binding loop, there is almost 90% homology between snail and xsna. The corresponding mRNA (xsna) is expressed strongly at the start of zygotic t...

The resin-dentin interface of in vivo specimens restored with the All-Bond 2 system by use of a total-etch wetbonding technique on vital deep human dentin was investigated by: (a) SEM examination of cryofractured specimens; (b) SEM examination of acid-rinsed, highly polished, embedded specimens; and (c) TEM examination of demineralized ultrathin sections. Ultrastructural features that were pert...

We investigated the temporal threshold for focal cerebral infarction in the spontaneously hypertensive rat The right middle cerebral artery and common carotid artery were occluded for 0,1 ,2 ,3 ,4 , or 24 hours, and all the animals were sacrificed 24 hours after the onset of ischemia. Cortical infarct volumes and edema volumes were quantified in serial frozen sections of hematoxylin and eosin-s...

substantive issue with the paper is the low sample sizes. For example why is only data from 1 piezometer used to average discharge conditions (page 6724, L24)? However, the authors provide chemical, hydrology, isotope, and genetic data to make their case all of which seem to point in the same direction. It’s very interesting to note that while the willow zone is most efficient, the forest zone ...

Abstract Systemic lupus erythematosus (SLE) is an autoimmune disease associated with abnormal activation of immune cells. Regulatory B (Breg) cells are a cell subset that negatively regulate responses via secretion immunoregulatory cytokines interleukin (IL)-10, IL-35, and transforming growth factor (TGF)-β. We had previously shown in lupus-prone MRL/lpr mice, pre-disease Breg were more potent ...