scholarly journals AN IMMUNOFLUORESCENT TECHNIQUE FOR OBSERVING THE BINDING OF CONCANAVALIN A TO FROZEN TISSUE SECTIONS

1973 ◽  
Vol 21 (3) ◽  
pp. 229-232 ◽  
Author(s):  
ROBERT M. PRATT ◽  
WILLIAM A. GIBSON

An indirect fluorescent antibody technique has been developed to observe the binding locus of concanavalin A (CON A) to specific structures in frozen tissue sections. The technique was developed using frontal sections of the embryonic rat head with particular attention focused on the secondary palate. The binding of CON A appeared to be mainly extracellular with the most intense fluorescence observed in basement lamina and cartilaginous structures. CON A binding was highly specific in that it was eliminated in the presence of competing sugars such as α-methyl mannoside. This relatively quick and simple technique should allow the observation of developmental or pathologic changes in CON A binding to frozen tissue sections from a variety of sources.

1982 ◽  
Vol 60 (5) ◽  
pp. 724-729 ◽  
Author(s):  
John D. Ipsen ◽  
Yusuf J. Abul-Hajj

An aggressive strain of Ceratocystis ulmi was grown in a defined medium for the production of phytotoxins. Antisera to two distinct toxins, concanavalin A binding glycopeptides and cerato-ulmin, were prepared and used as probes for the detection and localization of the toxins in toxin-treated cuttings of elm. The toxins caused wilting of elm cuttings and were detected primarily on the pit membranes of bordered pits.


2000 ◽  
Vol 41 (4-5) ◽  
pp. 301-308 ◽  
Author(s):  
N. Noda ◽  
H. Ikuta ◽  
Y. Ebie ◽  
A. Hirata ◽  
S. Tsuneda ◽  
...  

Fluorescent antibody technique by the monoclonal antibody method is very useful and helpful for the rapid quantification and in situ detection of the specific bacteria like nitrifiers in a mixed baxterial habitat such as a biofilm. In this study, twelve monoclonal antibodies against Nitrosomonas europaea (IFO14298) and sixteen against Nitrobacter winogradskyi (IFO14297) were raised from splenocytes of mice (BALB/c). It was found that these antibodies exhibited little cross reactivity against various kinds of heterotrophic bacteria. The direct cell count method using monoclonal antibodies could exactly detect and rapidly quantify N. europaea and N. winogradskyi. Moreover, the distribution of N. europaea and N. winogradskyi in a biofilm could be examined by in situ fluorescent antibody technique. It was shown that most of N. winogradskyi existed near the surface part and most of N. europaea existed at the inner part of the polyethylene glycol (PEG) gel pellet, which had entrapped activated sludge and used in a landfill leachate treatment reactor. It was suggested that this monoclonal antibody method was utilized for estimating and controlling the population of nitrifying bacteria as a quick and favorable tool.


Science ◽  
1964 ◽  
Vol 145 (3635) ◽  
pp. 943-945 ◽  
Author(s):  
G. C. Brown ◽  
H. F. Maassab ◽  
J. A. Veronelli ◽  
T. J. Francis

1965 ◽  
Vol 13 (3) ◽  
pp. 155-160 ◽  
Author(s):  
H. J. KEUTEL

Fluorescent labeled antibodies were used for the demonstration of uromucoid. This urine specific mucoprotein is demonstrably present only in the epithelial cells of the proximal segments of the normal human renal tubules and in the matrix of human kidney stones of all the common crystalline compositions.


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