Human KGF is FGF-related with properties of a paracrine effector of epithelial cell growth   总被引：114，自引：0，他引：114  

P W Finch  J S Rubin  T Miki  D Ron  S A Aaronson 《Science (New York, N.Y.)》1989,245(4919):752-755

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Transmission of virulent footrot between sheep and goats     

SC GHIMIRE  JR EGERTON  OP DHUNGYEL 《Australian veterinary journal》1999,77(7):450-453

OBJECTIVE: To determine the infectivity of ovine and caprine strains of Dichelobacter nodosus for both sheep and goats. DESIGN: Pen experiments in which 20 sheep and 19 goats were challenged directly with the two strains, and transmission experiments on pasture, using donors infected by experimental challenge. RESULTS: Sheep and goat strains of D nodosus infected both animal species in experimental challenges. Animals so infected transmitted footrot to both sheep and goats on pasture plots. A significantly smaller proportion of goats than sheep was infected when challenged with either strain. The interval between exposure and development of footrot in goats was longer than in sheep when recipient animals were exposed to infected donors on pasture. The disease was less invasive in goats than in sheep. CONCLUSIONS: With the strains of D nodosus used there was no evidence of host specificity. Direct transmission of footrot can occur between sheep and goats in the same environment. There is a need to include goats in ovine footrot eradication programs and vice versa.  相似文献   

Phase velocities of rayleigh waves in the MELT experiment on the east pacific rise   总被引：2，自引：0，他引：2  

DW Forsyth  SC Webb  LM Dorman  Y Shen 《Science (New York, N.Y.)》1998,280(5367):1235-1238

The phase velocities of Rayleigh waves increase more rapidly with distance from the East Pacific Rise (EPR) axis than is predicted by models of conductive cooling of the lithosphere. Low velocities near the axis are probably caused by partial melt at depths of 20 to 70 kilometers in a zone several hundred kilometers wide. The lowest velocities are offset to the west of the EPR. Wave propagation is anisotropic; the fast direction is approximately perpendicular to the ridge, parallel to the spreading direction. Anisotropy increases from a minimum near the axis to 3 percent or more on the flanks.  相似文献