Millipore diffusion chambers (MDC) with 0.22-j,m filters loaded with spores or vegetative cells of Clostridium botulinum were surgically implanted intraperitoneally (ip) into guinea pigs. MDC expose C. botulinum spores or vegetative cells to body fluids yet protect them from phagocytes. Guinea pigs receiving MDC containing 109 spores plus 108 polymorphonuclear (PMN) leukocytes and MDC with 109 ...

Pregnant women have an increased risk for some infections, particularly during the last trimester. Phagocytic emigration from the circulation into tissues is an important aspect of the initial immune response. Therefore, circulating phagocytes of 42 pregnant and 15 postpartum patients were studied in vitro for random and chemotactic (or directional) migration through membrane filters (Millipore...

BACKGROUND Microbial cellulose conversion by Clostridium thermocellum 27405 occurs predominantly through the activity of substrate-adherent bacteria organized in thin, primarily single cell-layered biofilms. The importance of cellulosic surface exposure to microbial hydrolysis has received little attention despite its implied impact on conversion kinetics. RESULTS We showed the spatial hetero...

The definitive role of the basement membrane complex adjacent to epithelial cells has not been established for developing systems. Speculation based on its position and properties of permeability to molecules of various size (1, 2) has led to the idea that the basement membrane is an important factor in mediation of extrinsic cues to developing epithelial cells (3). I t is unknown whether the b...

Myocardial perfusion SPECT imaging with Tc99m-sestamibi is the most accurate non-invasive means of detecting coronary artery disease and assessing the severity of perfusion abnormalities in the patients with coronary stenosis. Though simple and straight forward the results produced by the technique is very much affected by the details being used. One of the main problems with the test, wh...

We present the procedure for designing a high speed and low power all-optical analog to digital converter (AO-ADC), by integrating InGaAsP semiconductor optical amplifier (SOA) with InP based photonic crystal (PhC) drop filters. The self-phase modulation in the SOA can shift the frequency of the Gaussian input pulse. The two output PhC based drop filters are designed to appropriately code the f...

Millipore diffusion chambers (MDC) with 0.22-mum filters loaded with spores or vegetative cells of Clostridium botulinum were surgically implanted intraperitoneally (ip) into guinea pigs. MDC expose C. botulinum spores or vegetative cells to body fluids yet protect them from phagocytes. Guinea pigs receiving MDC containing 10(9) spores plus 10(8) polymorphonuclear (PMN) leukocytes and MDC with ...