Immunology & Antibody Research

Buying guide

Price here spans more than any one category on its own, because the set runs from a single vial of reagent to a complete multi-laser instrument. At the low end, listings start at EUR 1, which is where individual antibody aliquots, cytokine standards and blotting consumables sit. At the high end, EUR 177.981 belongs to the detection hardware, a flow cytometer or an automated immunoassay platform with the fluidics and optics that command most of the cost. Everything in between is reader-grade equipment: microplate readers, cell counters and blotting systems, where price tracks channel count, automation and sensitivity.

The catalogue weights heavily toward used equipment. 99 percent of the listings are used. For the reagent end that matters in a specific way, because an antibody and a cytokine standard both degrade, so condition on a vial is a question of storage and remaining shelf life rather than wear. For the instrument end it is the familiar trade: a used cytometer or plate reader is listed below a new one, and warranty is arranged in consultation for the individual listing rather than set across the catalogue.

Across 135 suppliers in 75 countries, the practical split is worth holding in mind when budgeting. The reagents are the recurring cost and the instruments the capital one, and a setup that looks affordable on the hardware can still be carried by what the assays consume. Where two listings cover the same method, the one that states its conjugate, its clone or its laser configuration is the one you can actually match to the rest of the bench.

Types of Immunology & Antibody Research

This field draws on antibodies and the reagents that go with them, flow cytometers, western blotting apparatus, immunoassay systems, cell counters, microplate readers, immunohistochemistry staining equipment and cytokine standards. Immunology and antibody research is not a single procedure but a set of detection methods, each built around reading where and how much of a target protein sits in a sample. The classes below are the ones the marketplace carries, and they divide by what the question is: how many cells carry a marker, how much of a protein is present, or where in a tissue it sits.

Which method answers which question?

The choice between techniques comes down to what you need to know, not to preference. When the question is what fraction of a mixed population expresses one or several markers, the work runs through a flow cytometer: cells pass single file through a laser, and fluorophore-conjugated antibodies bound to surface or intracellular targets light up as each cell crosses the beam. Flow cytometry antibodies are sold pre-conjugated for exactly this, matched to the detector's excitation lines.

When the question is how much of a protein is in a lysate and at what molecular weight, the work runs through western blotting. Proteins are separated by size, transferred to a membrane and probed with a primary antibody, then a labelled secondary. The readout is a band whose position confirms identity and whose intensity estimates quantity.

When the question is a concentration across many samples at once, immunoassay systems and microplate readers take over. An ELISA on a plate captures the antigen, builds up a labelled sandwich and develops a colour or luminescence that a plate reader turns into a number against a standard curve. Cytokine standards supply the known concentrations that curve is built from.

Where the steps constrain each other

The methods share a dependency that a single category page cannot show: the antibody is the common part, and its format decides which instrument can read it. A clone sold unconjugated suits a western blot, where a secondary does the labelling, but it will not run on a cytometer without a fluorophore attached to the right emission channel. Buying the detection instrument and the reagent separately, without checking that the conjugate matches the reader, is how a setup ends up with a cytometer and antibodies it cannot excite.

Sample counting sits upstream of all of it. A cell counter sets the input number so that a cytometry run or a plate assay starts from a known density, because both read ratios and concentrations that only mean something against a defined starting population. Immunohistochemistry runs on a different axis again: the question there is location, so the antibody stains a tissue section and the readout is a microscope image rather than a signal from an instrument. A single antigen can be followed from counted cells, through a quantified lysate, to a stained section, and each leg wants its own reagent format even when the clone is the same.