Disclosed are methods, kits, and compositions for the highly sensitive detection of molecules. The methods, kits, and compositions are useful in determining concentrations of molecules in samples to levels of 1 femtomolar, 1 attomolar, or lower. The methods, kits, and compositions also allow the determination...http://www.google.com/patents/US7572640?utm_source=gb-gplus-sharePatent US7572640 - Method for highly sensitive detection of single protein molecules labeled with fluorescent moieties
