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Polystyrene plates

Manufactured by BD

Polystyrene plates are a type of laboratory equipment used for various applications. They are flat, circular dishes typically made of transparent polystyrene plastic. Polystyrene plates are designed to provide a stable and sterile surface for cell culture, sample preparation, and other experimental purposes.

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2 protocols using polystyrene plates

1

Evaluating Dispersants' Impact on Francisella Biofilms

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The effect of dispersants was evaluated by using 24 h and 48 h-old biofilms of F. novicida and F. philomiragia biofilms, respectively. F. novicida biofilms were grown in 96-well polystyrene plates (Falcon®) starting from an inoculum of 1x107 CFU/mL (2x106 bacteria/well), while for F. philomiragia 5x107 CFU/m (107 bacteria/well) were used. After one (F. philomiragia) or two (F. novicida) gentle PBS washes, the MMH was replaced with 200 μL fresh medium supplemented with increasing concentrations of dispersing agents including DNase I (Roche), EDTA (Sigma-Aldrich), chitinase from Streptomyces griseus (E.C. 3.2.1.14) (Sigma-Aldrich), cellulase (Sigma-Aldrich), proteinase K (Invitrogen) or Dispersin B (Kane Biotech Inc. Canada). Microtiter plates were incubated at 37°C for 24 h under 5% CO2 and biofilm was quantified as described elsewhere. Data were expressed as percentage of remaining biofilm calculated in comparison to untreated biofilm under the same experimental conditions.
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2

Macrophage Phagocytosis Inhibition Assay

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RAW264.7 Macrophages were cultured in DMEM (Life Technologies) + 10% FBS (Life Technologies) +1% penstrep (Life Technologies) media in 12 well tissue culture treated polystyrene plates (BD Falcon) until 75% confluent at which point treatments (n=3) were applied (controls, 0.1uM, 0.5uM, and 1uM Lat A micelles, 1uM Free Lat A). Treatments were incubated with cells at 37°C for 2 hours, and subsequently 15 μg/mL pHrodo red dextran dye (Thermo Fisher) was added to each well for 15 minutes. After this incubation, cells were washed with PBS and cell staining buffer and removed from 12 well plates by cell scraping method. Control groups included PBS treatment with no pHrodo chase, PBS treatment with a pHrodo chase, and cells treated with 1 μM Lat A micelles with no pHrodo chase. These groups were used to normalize flow data. Data was normalized as a percentile of uptake inhibition between the maximum uptake (pHrodo chase) and minimum uptake (PBS treatment).
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