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NF-κB is not one pathway, it is two clocks running at different speeds. The canonical arm fires within minutes of TNF-α, IL-1β or LPS reaching the surface, peaks, and is switched off by feedback it e

Every leukocyte that reaches an inflamed tissue has solved the same mechanical problem. It must stop, in under a second, against a shear flow that would otherwise sweep it past the site of infection.

Immunology · Cytokine SignallingTNF-alpha and Inflammation: Structure, Signalling & TherapyTumour necrosis factor alpha (TNF-α) is one of the most important pro-inflammatory cytokines in the body. Sig

The inflammasome is one of the few innate pathways that destroys the cell it activates. A macrophage that assembles NLRP3 has committed to a decision it cannot reverse: a priming signal through TLR4

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

An agonist antibody does not activate its receptor. It gets held still by something else, and the receptors underneath cluster because they are crowded. That sentence sounds like a technicality and i

In most solid tumours the largest immune population is not a T cell. It is a myeloid cell that has been recruited, expanded and re-educated by the tumour itself. Tumour-associated macrophages and mye

CD155 is read by four different receptors, and only one of them turns the killing programme on. The nectin and nectin-like ligands induced on stressed and transformed cells are simultaneously an acti

A chimeric antigen receptor is a synthetic protein wired into a real signalling pathway. The extracellular half is an antibody fragment; everything below the membrane is borrowed from the T-cell rece

Toll-like receptors are the reason a milligram of endotoxin can kill a mouse. They are the fastest, least discriminating layer of immunity: germline-encoded sensors that read conserved microbial chem

Phosphorothioate is a chemical modification commonly used in oligonucleotide-based therapies to enhance the stability and efficacy of therapeutic nucleic acids. In this modification, one

What is Immunometabolism? Immunometabolism is an exponentially growing, multi-disciplinary field of research aiming at deciphering the dynamic cellular and mole

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

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

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

Unravel the complexities of bone resorption, a crucial biological process essential for skeletal health and calcium regulation, through the intricate roles of osteoclasts and osteoblasts. Ke

The use of M2 Supplement in organoid culture has revolutionized the way researchers cultivate and maintain these three-dimensional (3D) cellular models. Organoids—self-organizing cell clu

The 3D Organoid Cell Viability Assay (AKES081) demonstrated high sensitivity and low cytotoxicity, making it ideal for long incubation studies (24-48 hours) and high-throughput applicati

Animal & Veterinary ELISA Kits | Mouse, Rat, Porcine & More | Assay Genie

Renal Cell Carcinoma (RCC) is the most common form of kidney cancer, originating in the lining of the proximal renal tubules. RCC accounts for approximately 90% of all kidney cancers and

Parkinson's disease (PD) is a progressive neurological disorder that primarily affects the motor system, leading to a wide array of symptoms ranging from tremors and stiffness to bradykinesia (slo

Immunology · Antibody ProductionHybridoma Technology: How Monoclonal Antibodies Are MadeHybridoma technology, pioneered by Georges Köhler and César Milstein in 1975, is the method that made monoclonal

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 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

What is Xeroderma Pigmentosum? Xeroderma pigmentosum (XP) also known De Sanctis-Cacchione syndrome is a rare genetic disorder that affects the skin, eyes and central nervous system. It is ca

What is Cystic Fibrosis? Cystic fibrosis (CF) is a genetic disorder that impairs the body's ability to produce sweat and thick mucus. CF causes mucus to build up in t

Sepsis, a life-threatening condition, is characterized by a dysregulated immune

Stem Cells: What are they and how they can help treat diseases Stem cells are a unique population of cells that possess the ability to self-renew and differentiate into specialized ce

Quick Facts About Patritumab DeruxtecanWhat is Patritumab Deruxtecan?Patritumab Deruxtecan (HER3-DXd) is an investigational antibody-drug conjugate (ADC) targeting HER3, a receptor impli

Gene Delivery · Viral VectorsLentiviral Vectors: Design, Production and Use in Gene DeliveryLentiviral vectors integrate their cargo into the host genome and transduce dividing and non-dividing cells

Quick Facts About RagifilimabWhat is Ragifilimab?Ragifilimab is an investigational anti-CD47 monoclonal antibody developed to block the CD47-SIRPα interaction, thereby enhancing macropha

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

Haematology · HaemostasisPlatelets: Formation, Structure, Activation and Clinical SignificancePlatelets are anucleate fragments shed from megakaryocytes, and they carry out primary haemostasis — adher

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

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

Cell Biology · PathologyNecrosis: Types, Causes, Mechanisms and How It Is MeasuredNecrosis is cell death accompanied by membrane rupture and release of intracellular contents — which is what makes it

Discover the distinct roles of 'In Vivo' and 'In Vitro' in biological research, where one offers a natural context and the other precise control, both vital for scientific advancement.

The MycoGenie Rapid Mycoplasma Detection Kit enables the detection of 28 Mycoplasma species in under 1 hour using a simple visual determination method, eliminating the need for expensive

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

Transfection protocols play a crucial role in the realm of molecular biology and genetic research, enabling the introduction of foreign nucleic acids into living cells. This innovati

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

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

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

Immunology · ImmunophenotypingCD Markers on B Cells: Development, Subsets and ImmunophenotypingB cells change their surface marker profile at every stage from bone marrow progenitor to antibody-secret

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

Molecular Biology · Techniques Guide Types of PCR – 7 Methods, Principles & Applications PCR stands as a cornerstone in molecular biology, ena

Immunology · Cell BiologyCells of the Innate Immune System: Types, Functions and MarkersThe innate immune system responds within minutes, without prior exposure, using cells that recognise conserved m

Cell Death · BiomarkersCleaved Caspase-3: Activation, Function and Detection in ApoptosisCaspase-3 sits at the point where apoptotic signalling becomes irreversible. It is made as an inactive proenzym

Gastroenterology · Barrier BiologyZonulin and Intestinal PermeabilityZonulin is the best-characterised endogenous regulator of intestinal tight junctions — the protein that opens the gut barrier on de

Immunology · Antigen PresentationDendritic Cells: Markers, Activation and SubtypesDendritic cells are the professional antigen-presenting cells that decide whether an immune response happens at all. T

In Vivo Methods · ProtocolsMouse Injection Guide: Intraperitoneal, Subcutaneous, Intramuscular & Intravenous RoutesRoute choice and injection technique determine how much of a dose actually reaches it