Characterization of the polyoma virus chromosome as a circular, double-stranded, supercoiled DNA (Weil and Vinograd, 1963; Vinograd et al.,-1965) made it apparent that the DNA enzymatic machinery faces a formidable problem ...

Nuclear receptors (NRs) are important transcription factors involved in the regulation of a variety of physiological processes such as embryonic development, cell differentiation and homeostasis (for review, see Mangelsdorf ...

In the aerobic cell, oxygen can be converted into a series of reactive metabolites, together called as "reactive oxygen species" (ROS). This large group include both radical and non-radical species such as superoxide anion ...

Mobile inteins and introns are genetic elements capable of self-propagation by “homing” into host genes and occur in entire taxonomy: eubacteria, eukarya, archaea and viruses. The process of “homing” is promoted by an ...

A crude extract of axenically grown amoebae was used as antigen in order to develop an AB microELISA for the detection and quantitation of E. histolytica-specific IgG antibodies. This ELISA was used to screen individual ...

Seafood including crustaceans, on ingestion, are known to provoke gastrointestinal as well as systemic allergic reactions. Crustaceans are aquatic arthropods with a chitinous exoskeleton and include shrimp, lobster, prawn ...

How multicellular organisms develop from a single-celled fertilized egg or zygote that in no way resembles the adult form is one of the major challenges in biology The phase of rapid cell division that follows fertilization ...

The term "lipid" covers an extremely diverse range of chemical or molecular species. Lipids, defined as molecules that are sparingly soluble in water but readily soluble in organic solvents, are broadly categorized into ...

Polycyclic aromatic hydrocarbons (PAHs) are compounds containing carbon and hydrogen atoms of fused benzene rings in linear, angular or cluster arrangements. These compounds have a large (negative) resonance energy, resulting ...