货品编号： Thermo.A-11073 品牌：Thermo 品名：Goat anti-Guinea Pig IgG (H+L) Highly Cross-Adsorbed Secondary Antibody, Alexa Fluor 488 规格：500ml 产品描述：

Product Specific Information To minimize cross-reactivity, these goat anti-guinea pig IgG (H+L) whole secondary antibodies have been affinity purified and

cross-adsorbed against bovine, chicken, goat, hamster, human, mouse, rabbit, rat, and sheep sera prior to conjugation. Cross-

adsorption or pre-adsorption is a purification step to increase specificity of the antibody resulting in higher sensitivity and less

background staining. The secondary antibody solution is passed through a column matrix containing immobilized serum proteins

from potentially cross-reactive species. Only the nonspecific-binding secondary antibodies are captured in the column, and the

highly specific secondaries flow through. The benefits of this extra step are apparent in multiplexing/multicolor-staining experiments

(e.g., flow cytometry) where there is potential cross-reactivity with other primary antibodies or in tissue/cell fluorescent staining

experiments where there are may be the presence of endogenous immunoglobulins.

Alexa Fluor dyes are among the most trusted fluorescent dyes available today. Invitrogen™ Alexa Fluor 488 dye is a bright, green-

fluorescent dye with excitation ideally suited to the 488 nm laser line. For stable signal generation in imaging and flow cytometry,

Alexa Fluor 488 dye is pH-insensitive over a wide molar range. Probes with high fluorescence quantum yield and high photostability

allow detection of low-abundance biological structures with great sensitivity. Alexa Fluor 488 dye molecules can be attached to

proteins at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection. The degree

of labeling for each conjugate is typically 2-8 fluorophore molecules per IgG molecule; the exact degree of labeling is indicated on the

certificate of analysis for each product lot.

Using conjugate solutions: Centrifuge the protein conjugate solution briefly in a microcentrifuge before use; add only the supernatant

to the experiment. This step will help eliminate any protein aggregates that may have formed during storage, thereby reducing

nonspecific background staining. Because staining protocols vary with application, the appropriate dilution of antibody should be

determined empirically. For the fluorophore-labeled antibodies a final concentration of 1-10 µg/mL should be satisfactory for most

immunohistochemistry and flow cytometry applications.