Op 50 Preparation
Op 50 Preparation - Related Videos
08:26
Measuring the 50% Haemolytic Complement (CH50) Activity of Serum
0 Views •
Cited by 90 •
2010
The classical pathway is activated by antibody and culminates in target cell lysis. The CH50 assay provides a measure of the complement activity of a serum sample. This video demonstrates the steps involved in determining the CH50 of a serum sample, the calculations and interpreting of results.
08:36
Modified ES / OP9 Co-Culture Protocol Provides Enhanced Characterization of Hematopoietic Progeny
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Cited by 12 •
2011
mStrawberry OP9 cells allow for complete evaluation of all ES-derived progeny from co-culture.
11:13
Creating Sub-50 Nm Nanofluidic Junctions in PDMS Microfluidic Chip via Self-Assembly Process of Colloidal Particles
0 Views •
Cited by 1 •
2016
We propose a simple self-assembly technique of silica colloidal nanoparticles to create a nanofluidic junction between two microchannels in polydimethylsiloxane (PDMS). Using this technique, a nanoporous bead membrane with a pore size down to ~45 nm was built inside a microchannel and applied to electrokinetic preconcentration of DNA samples.
08:01
A Streamlined, Label-Free Real-Time 50% Tissue Culture Infectious Dose (TCID50) Assay using Impedance for Automated Viral Titer Quantification
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2026
The TCID50 assay reported here leverages label-free real-time impedance measurements and the system's Virology module to objectively monitor virus-induced cytopathic effects (CPE) in real time. This streamlined assay significantly reduces hands-on time while supporting high-throughput, quantitative kinetic CPE measurements and enabling automated, real-time TCID50 calculations.
07:22
Glycemic Impact on Knee Osteoarthritis Symptoms on Physical, Radiographic, and Inflammatory Markers among Individuals Aged 50 and Over with Diabetes
0 Views •
2025
Here, we present a protocol to assess glycemic control using capillary blood glucose (CBG) and glycated hemoglobin A1C (HbA1C) levels. This study investigates the impact of hyperglycemia on knee osteoarthritis (KOA) symptoms, physical performance, physical activity level, radiographic severity, and inflammation in older adults with diabetes.
FAQs
Consistency in the bacterial lawn helps keep nutrition comparable among C. elegans cultures. Because worms consume the lawn, differences in how much OP50 reaches each plate can introduce variation unrelated to the biological question. Standardized preparation therefore supports cleaner comparisons in experiments measuring development, behavior, genetics, or aging.
Growth in nutrient medium and subsequent concentration or transfer determine how much bacterial material is available for plating. These steps connect culture preparation to the final lawn rather than being separate handling details. Maintaining a consistent relationship between the culture and the amount placed on plates helps make feeding conditions comparable across worm cultures.
Even distribution helps produce a more uniform bacterial lawn across the nematode growth medium. A patchy or inconsistent lawn can expose worms on different plates to unequal food availability, complicating interpretation of biological measurements. Uniform coverage is therefore an important preparation goal when experiments depend on comparable maintenance conditions.
The workflow starts by culturing the OP50 strain in nutrient medium. The bacterial culture is then concentrated or transferred as needed, followed by distribution onto nematode growth medium plates. After the bacteria form a lawn, the plates provide the feeding condition used to maintain laboratory C. elegans cultures.
Reliable OP50 preparation supports C. elegans studies of development, behavior, genetics, and aging. It also contributes to experiments examining host-microbe interactions, where the bacterial food source forms part of the culture context. Consistent preparation helps researchers distinguish biological effects from differences in routine worm maintenance.
Preparing OP50 consistently establishes a controlled nutritional background for worm cultures. That background can support more reproducible observations because experimental groups receive comparable bacterial food conditions before measurements are collected. In biology research, this is especially relevant when comparing phenotypes, developmental outcomes, behavior, or responses associated with host-microbe interactions.