383 results for 'guid'

Microbiology · Bacterial PathogensStreptococcus pneumoniae: Pathogenesis, Diagnosis & TreatmentStreptococcus pneumoniae (the pneumococcus) is a Gram-positive, encapsulated bacterium that colonises the

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

Lab Buffers · ProtocolsPBS vs DPBS: What’s the Difference?PBS and DPBS are the everyday isotonic, pH-balanced salt solutions used to wash, dilute and transport cells and proteins. This guide bre

Quick answer On the GDF-6 (Growth Differentiation Factor 6) ELISA Kit, a researcher saw an elevated blank (OD ≈ 0.41) with the two lowest standards reading at or below it, and no signa

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

Immunology · T LymphocytesCD8+ T Cells: Cytotoxic Mechanisms, Memory and ExhaustionCD8+ T cells kill infected and transformed cells directly, and they do it with a specificity nothing else in the immu

Imagine a future where a simple blood test could detect cancer in its earliest stages, long before symptoms appear. This isn't science fiction; it's the rapidly advancing reality of liquid biopsy, a r

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

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

Imagine a battlefield where the enemy doesn't just hide from soldiers—it actively sabotages their weapons. In the tumor microenvironment, cancer cells have evolved a devious strategy: they transfer th

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

Assay Genie Mission | Making Scientists Smile

Enzymology · Protein DegradationProtease vs Peptidase: Understanding the DifferenceProteases and peptidases are the enzymes that cleave peptide bonds — breaking proteins down into peptides and peptide

As hantavirus cases continue to rise globally, the question becomes not just how to detect infections, but how to prevent them in the first place. Recent epidemiological investigations across Califor

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

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

In Vitro vs In Vivo: Complete Comparison + Selection Guide | Research MethodsDiscover the distinct roles of 'In Vivo' and 'In Vitro' in biological research, where one offers a natural con

Written by Seán Mac Fhearraigh, PhD  •  Updated: 19 May 2026  •  ~9 min read Quick Answer The five main types of ELISA are sandwich, competitive, direct, indirect and multiplex. Sandwich ELISA is

The selection of a secondary antibody is a critical step in the experimental design of various immunodetection methods, including Western Blot, ELISA, immunohistochemistry (IHC), and immunofluores

Vascular Endothelial Growth Factor A (VEGFA) is a pivotal signaling protein involved in both vasculogenesis and angiogenesis, processes essential for the formation of blood vessels during embryoni

Flow cytometry stands as a pivotal technique in the realms of molecular biology and immunology, enabling the analysis of physical and chemical characteristics of cells or particles as they flow in

The intricate process of stem cell differentiation and self-renewal is a cornerstone of developmental biology and regenerative medicine. At the heart of this complex regulatory mechanism are trans

The complex interplay between chemokines and cytokines is fundamental to the immune system's function, orchestrating the body's response to infection, inflammation, and injury. This detailed analy

Custom Research Services | Assay Genie

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

Neuroscience · NeuroimmunologyMicroglial Functions: Immunity, Inflammation & NeurodegenerationMicroglia are the resident immune cells of the central nervous system — dynamic sentinels that survey the

Clinical · Immunology Guide IgA Test: Normal Ranges, Results & What They Mean [2026] What the immunoglobulin A blood test measures, how result

Innate Lymphoid Cells (ILCs) represent a fascinating component of the immune system, playing a crucial role in maintaining tissue homeostasis and mounting rapid responses against pathogens. The

Clinical pathology labs play a crucial role in modern healthcare, providing critical diagnostic testing services for a wide array of diseases and conditions. These laboratories are design

The Role of CD25+FOXP3+CD45RA- Treg Cells in Cancer PrognosisIntroductionRegulatory T-cells (Treg cells) are a specialized subset of T-cells that play a pivotal role in maintaining immune homeostasis

Cell Signalling · HaemostasisBlood Coagulation Signaling Pathways: A Critical OverviewBlood coagulation is a tightly regulated cascade in which circulating clotting factors are sequentially activated

Techniques · Gel ElectrophoresisAgarose vs Polyacrylamide: A Comparative AnalysisAgarose and polyacrylamide are the two workhorse gel matrices of electrophoresis. Agarose gels resolve larger DNA and R

For decades, the fight against cancer has been a story of incremental gains. But what if we could fundamentally shift the battlefield, turning the body's own immune system into a precision-guided weap

TUNEL Assay Kits | 1-Step In Situ Apoptosis Detection | Assay Genie

In the dynamic landscape of biomedical research, organoids have emerged as a groundbreaking tool, offering three-dimensional (3D) models that mimic the complex architecture and functionality of hu

In the relentless fight against cancer, immunotherapy has emerged as a beacon of hope, harnessing the body's own defenses to combat malignant cells. Yet, predicting which patients will respond to the

Quick answer A researcher preparing a Human IL-18 ELISA wasn't sure whether the protocol's “300-fold” HRP-Streptavidin step meant adding 40 µL of concentrat

Recent advances in immunotherapy have highlighted the importance of targeting immune checkpoints to enhance the immune system’s ability to combat cancer. A new potential target in this gr

Haemostasis · Platelet BiologyUnderstanding Platelet Activation: A Comprehensive OverviewPlatelet activation is the rapid, tightly controlled response by which circulating platelets change shape, rele

What You Need to Know About MilatuzumabWhat is Milatuzumab?Milatuzumab is a humanized monoclonal antibody targeting CD74, a molecule involved in antigen presentation and cell signaling.W

Quick Facts About PinatuzumabWhat is Pinatuzumab?Pinatuzumab is an antibody-drug conjugate (ADC) designed to target CD22, a protein highly expressed on B-cell malignancies, including non

Quick Facts About OnvatilimabWhat is Onvatilimab?Onvatilimab is a monoclonal antibody targeting CD47, often referred to as the "don't eat me" signal, which is overexpressed on many cance

The inception of induced pluripotent stem cells (iPSCs) has heralded a new dawn in the realm of biomedical research and regenerative medicine, setting the stage for groundbreaking advancements in

Protocols · Western BlottingBoiling Proteins for Western BlottingHeating protein samples in SDS loading buffer denatures proteins and coats them in a uniform negative charge for clean SDS-PAGE s

Quick answer A researcher's samples read negative at the standard 1-hour incubation on the MycoGenie Rapid Mycoplasma Detection Kit (MORV0011), but many turned positive after 2 hours.

A New Era in Oncology Chimeric Antigen Receptor (CAR)-T cell therapy represents a paradigm shift in the fight against cancer, offering a personalized and powerful immunotherapy that trains a patient

Quick Facts About TigatuzumabWhat is Tigatuzumab?Tigatuzumab is a monoclonal antibody that targets the death receptor 5 (DR5) pathway, inducing apoptosis in cancer cells.What is the mech

The Role of CTLA-4 in Breast Cancer: Implications for ImmunotherapyBreast cancer (BC) remains one of the most prevalent malignancies affecting women worldwide, with significant morbidity and mortality

The IgA test, also known as immunoglobulin A test, is a diagnostic tool used to measure the levels of IgA antibodies in the blood. Immunoglobulin A (IgA) is a type of antibody that plays a cruc

Imagine a world where cancer treatment is no longer a blunt instrument but a precision-guided surgical strike, executed by the body's own immune system. For years, we have dreamed of 'smart' cells th

In the intricate world of cancer biology, a silent conversation is constantly unfolding between tumor cells and their environment. For decades, we viewed this dialogue as a one-way street, with cancer

Imagine a high-stakes game of hide-and-seek where the seeker is your immune system and the hider is a master of disguise: cancer. For decades, we believed the 'wanted' posters for tumor cells were li

Tertiary Lymphoid Structures: The Body's Hidden Arsenals in the Fight Against Cancer Imagine a battlefield within the body, where the immune system stands as the last line of defense against the rele