[交流] 【求助/交流】2° antibody表示什么意思

看文献有个2° antibody是什么意思？是存放温度吗。在下不是学生物的，请生物方面的大侠们讲详细些呢
原文：
GBP Binding Assay. Printed slides were analyzed without any
further modification of the surface. Slides were incubated in
either a one-step procedure with labeled proteins or a sandwich
procedure in which the bound GBP was overlaid with labeled
secondary antibodies or GBPs precomplexed with labeled antibodies.
GBPs were added at a concentration of 5–50 gml in
buffer (usually PBS containing 0.005–0.5% Tween-20). Secondary
antibodies (10 gml in PBS) were overlaid on bound GBP.
GBP-antibody precomplexes were prepared in a molar ratio of
1:0.5:0.25 (5–50 gml) for GBP2° antibody3° antibody, respectively
(15 min on ice). The samples (50–100 l) were applied
either directly onto the surface of a single slide and covered with
a microscope coverslip or applied between two parallel slides
separated by thin tape and pressed together by paper clips (34)
and then incubated in a humidified chamber for 30–60 min.
Slides were subsequently washed by successive rinses in (i)
PBS-0.05% Tween, (ii) PBS, and (iii) deionized water, then
immediately subjected to imaging. Serum samples were typically
used at dilutions of 1:25, and 0.4–0.8 ml was applied directly onto
the slide surface without any cover glass. The slides were gently
rocked at room temperature for 90 min followed by detection
with secondary antibodies (Table 1). Whole virus was applied
(0.8 ml) at a concentration of 100 gml in buffer (PBS
containing 0.05% Tween-20) containing the neuraminidase inhibitor
oseltamivir carboxylate (10 M).

[ Last edited by langlang0715 on 2011-1-7 at 14:19 ]

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