9641 results for 'dna give'

Quick answer: A researcher subtracted the blank from a competitive ELISA (a Serotonin kit) and every result turned negative. In a competitive assay the signal is inversely proportional to

Secondary Antibodies | HRP, FITC, Cy3 & AP Conjugates | Assay Genie

A T-cell engager does not give the T cell an instruction. It gives it an address. A bispecific antibody with one arm on CD3 and the other on a tumour antigen forces two membranes into contact and let

SfN 2024: Meet Assay Genie at the Society for NeuroscienceAssay Genie is delighted to be attending SfN 2024 in Chicago, Illinois on 5th to the 9th of October at the McCormick Convention

Quick answer On the Fatty Acid Oxidation (FAO) Assay Kit (BR00001), a researcher found that a subset of skeletal-muscle samples returned negative values once the control well was subtr

AACR 2025: Meet Assay Genie at the American Association for Cancer Research Assay Genie is delighted to be attending and exhibiting at AACR 2025 in Chicago, Illinois from the 25-30th of

Methods · FluorescenceFRET Assays: Principle, Förster Radius and Measurement MethodsFRET transfers energy from an excited donor fluorophore to a nearby acceptor without emitting a photon, and the effi

Dozens of cytokines converge on four kinases and seven transcription factors. That compression is the problem JAK–STAT has to solve, and it is why this map is drawn as receptor, kinase and STAT colum

Western Blot Protocol & Troubleshooting Guide | 14 Steps + 101 Tips | Assay Genie

The neutrophil is the most heavily armed short-lived cell in the body. It leaves the marrow with its weapons already made — granules preloaded with elastase, myeloperoxidase and defensins — and spend

SITC 2024: Meet Assay Genie at the Society for Immunotherapy of Cancer Annual MeetingAssay Genie is delighted to be attending and exhibiting at SITC 2024 in Houston, Texas on Friday the

Immunology · Antibody BiologyAntibody Light Chains, Heavy Chains, Constant Regions & Tumour-Associated AntigensAn antibody’s specificity comes from its variable domains and its biological effect comes

Loading Control Antibodies | GAPDH, \u03b2-Actin & Tubulin | Assay Genie

Sample Preparation · ImmunoassaySerum vs Plasma: Key Differences and When to Use EachSerum and plasma come from the same blood draw but are not interchangeable. One is collected after clotting, the ot

Biochemistry · Protein Guide Amino Acids: Types, Functions, Structure & Essential Guide The 20 standard amino acids are the building blocks of

Both interferon families run through STAT1, and that single shared subunit is why they are so often conflated — and why conflating them is a mistake. Type I interferon assembles STAT1 into a three-pa

Glycolysis & Carbohydrate Assay Kits | Glucose, Lactate, ATP | Assay Genie

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Immunodetection · ProtocolsSecondary Antibody Incubation: Times, Conditions and TroubleshootingThe secondary antibody step determines how much signal you get and how much background comes with it. Inc

Embryonic induced pluripotent stem cells (iPSCs) hold immense potential in the field of regenerative medicine due to their ability to differentiate into various cell types. Understanding the diffe

Cell Viability, Cytotoxicity & Proliferation Assay Kits | Assay Genie

Quick answer When plates from the same lot give very different OD values, the cause is almost always a comparison problem, not a manufacturing problem. The three usual culprits are a t

Quick answer A researcher ran a high-sensitivity porcine insulin sandwich ELISA on EDTA plasma and saw main-run duplicate CVs as high as 29.6% (kit spec: intra-assay CV <8%) togethe

For reproducible, isoform-specific detection, choose a monoclonal antibody; for robust detection across multiple epitopes or faster turnaround, choose a polyclonal antibody. The real tradeoff is epit

Articular cartilage, a key player in joint function, owes its unique properties to its extracellular matrix (ECM). This complex, highly specialized structure is not only fundamental in maintaining

Announcement · Powered by Assay GenieIntroducing BioSymposia: The Gathering Place for ScienceWe’re excited to announce the launch of BioSymposia, our new sister platform and a free home for scientific

Cell Culture · ProtocolsPassaging Hybridoma Cells: A Detailed GuideHybridomas are productive but temperamental. They grow in suspension, are sensitive to shear and to overgrowth, and — the problem tha

Imagine an elite squad of soldiers sent to neutralize a hidden fortress, only to find themselves wandering aimlessly in a thick, disorienting fog just outside the gates. This is the current reality f

In the periphery, co-stimulation rescues a T cell. In the thymus, the same molecules kill it. A peripheral T cell that engages its receptor without CD80 and CD86 becomes anergic; engage them and it r

Horseshoe crabs, often referred to as "living fossils," are invaluable to modern medicine due to their unique blue blood. This blood is the source of Limulus Amebocyte Lysate (LAL), a sub

Immunophenotyping by Flow Cytometry Immunophenotyping is a technique used in the field of immunology and cell biology to identify and classify cells based on the specific proteins o

Melanoma is an aggressive type of skin cancer that originates in melanocytes, the cells responsible for producing melanin, which gives skin its color. Although it is less common than othe

Two drugs aimed at the same axis can give opposite results in the same disease. Blocking IL-23p19 is highly effective in psoriasis and works in Crohn’s disease. Blocking IL-17A directly is highly eff

A chemokine gradient does not move a leukocyte anywhere. It only tells one that has already stopped which way to go. That sentence is the whole map. Trafficking is a four-step cascade and the steps a

Ferroptosis Assay Kits | Lipid Peroxidation, Iron & Glutathione | Assay Genie

You can remove almost every B cell from an animal and barely move its antibody titre. That is not a failed experiment — it is the expected result, and it follows from one fact: CD20 is switched off a

Most immunology is written as though a T cell must first be told what to look for. Three lineages did not read that memo. γδ T cells, invariant NKT cells and MAIT cells leave the thymus with their ef

Antibody Sampler Packs | 50 Pathway Panels | Assay Genie

Dendritic cells (DCs) are pivotal in the immune system, orchestrating innate and adaptive immune responses. Understanding their developmental lineage pathway is crucial in immunology, particularly

Immunology Guide 5 Types of Immunoglobulins: IgG, IgA, IgM, IgD & IgE The five antibody classes that drive immune defence — their structure, fun

Cell Biology · Protein DegradationThe Autophagy Pathway: Mechanism, Regulation and How to Measure ItAutophagy is the cell’s route for degrading and recycling its own contents — damaged organelles, agg

Written by Seán Mac Fhearraigh, PhD  •  Updated: 19 May 2026  •  ~9 min read Quick Answer ELISA and Western Blot are both antibody-based protein detection methods. ELISA is faster, higher through

Signal 1 tells a T cell what it is looking at; signal 2 tells it whether to care. The same peptide–MHC engagement that launches a productive effector response can just as easily install an anergy pro

The Assay Genie 3D Organoid Cell Viability Assay (AKES081) provided superior results compared to ThermoScientific PrestoBlue, maintaining over 100% viability at all time points in untrea

Bone Biology · BiomarkersBone Resorption: Process, Markers & Clinical SignificanceBone resorption is the process by which osteoclasts break down bone tissue and release its stored minerals into the bl

Quick answer A competitive ELISA is running correctly when the blank (zero standard) gives the highest OD, the standard curve drops smoothly with rising concentration, and your samples land in the

Only 1% of our blood is made up of white blood cells, but they have a significant impact. Alternatively referred to as leukocytes, white blood cells. We are shielded from disease and

Immunology · NeuroscienceHistamine Receptors: H1, H2, H3 & H4 ExplainedHistamine receptors are the G protein-coupled receptors through which histamine controls allergy, gastric acid secretion, neurotr

Quick answer On the Dog Beta-endorphin (BEP) ELISA Kit, a researcher ran the same canine serum aliquots on two plates from the same lot and saw roughly double the concentration on one

Quick answer A researcher running a Rat Eotaxin/CCL11 (Eotaxin) sandwich ELISA saw sample readings sit above the top standard and wells turn colour the instant TMB was added — even aft

QUICK ANSWER A researcher ran a competitive 2,3-bisphosphoglycerate (2,3-BPG) ELISA on red blood cell (RBC) lysate. The standard curve was textbook, yet every lysate sample read at the

Quick answer A researcher measuring glucose in human saliva on the fluorometric procedure of a glucose assay kit had a textbook standard curve, yet every sample read far below the expe

Written by Seán Mac Fhearraigh, PhD  •  Updated: 19 May 2026  •  ~10 min read Quick Answer A sandwich ELISA uses two antibodies — a capture ant

Quick Info Section: Key Facts About MogamulizumabWhat is Mogamulizumab?Mogamulizumab is an anti-CCR4 monoclonal antibody used primarily for treating certain cancers, including cutaneous

Almost any inflammatory phenotype in a mouse can be assigned to a cytokine by taking that cytokine away. Neutralisation is the most direct causal test immunology has: inject a functional-grade antibo

Microbiology · AntibioticsPenicillin vs Streptomycin: The Battle of AntibioticsPenicillin and streptomycin are two of the most important antibiotics ever discovered — and they work in completely diffe

A depletion experiment is only as good as the depletion you can prove. Injecting a functional-grade antibody and assuming the population is gone is the most common failure mode in in vivo immunology.

The CD28 molecule plays a crucial role in amplifying T cell activation, which is critical for mounting effective immune responses against tumors. By engaging with co-stimulatory molecules