The study of living cells, isolated or in tissues, in several applications, requires the use of microscopy techniques. The fluorescence microscopes are specially important for making possible images with enhancement of ...

Photodynamic therapy (PDT) is a modality for treatment of tumors, and uses a combination of a drug (photosensitizer) and light in the presence of the molecular oxygen to selectively damage target tissue. In the absent of ...

Chromatic contrast is a technique used in some areas of medicine to provide better visualization of biological tissues. Based on principles of color composition, a new illumination system was constructed using colored ...

Biotechnology has presented, in the last years, a rapidly growing development. New biotechnological industrial processes are constantly introduced using different microorganisms and/or enzymes. In this context, the application ...

The need for new and useful compounds to provide assistance and relief in all aspects of human condition is ever-growing. Drug resistance in bacteria, the appearance of life-threatening viruses, and the increase in the ...

The clavulanic acid is a powerful inhibitor of the beta-lactamases produced by bacterias resistants to penicillin and cefalosporin. This acid is produced industrially by strains of Streptomyces clavuligerus in complex ...

Swine erysipelas is one of the diseases responsible for the great economic losses in swine-producing areas of the world. The bacteria Erysipelothrix rhusiopathiae is the causative agent of erysipelas, and the vaccines ...

Streptococcus pneumoniae (pneumococo) is a pathogenic bacterium that causes several infections which are aggravated by the increase of serotypes with antibiotics resistance. The development of an effective vaccine against ...

The sugarcane weevil, Sphenophorus levis, is an important pest in sugarcane culture in São Paulo state, Brazil. To complete its life cycle, S. levis may depends on microorganisms that inhabit its intestinal tract and play ...

The development of the biotechnology has permitted to achieve, among other biotechnological products, many recombinant proteins which are largely used as vaccines, hormones, enzymes and other ways of human therapeutic ...