- Common Cold

Bringing sniffles and sneezes and perhaps a sore throat and annoying cough, the common cold catches all of us from time to time.

With kids getting as many as eight colds per year or more, this contagious viral infection of the upper respiratory tract is the most common infectious disease in the United States and the No. 1 reason kids visit the doctor and stay home from school.

- ONCOGENIC VIRUSES

Cancers are the result of a disruption of the normal restraints on cellular proliferation. It is apparent that the number of ways in which such disruption can occur is strictly limited and there may be as few as forty cellular genes in which mutation or some other disruption of their expression leads to unrestrained cell growth .

- Ketone

 A ketone (pronounced as key tone) is either the functional group characterized by a carbonyl group (O=C) linked to two other carbon atoms or a chemical compound that contains a carbonyl group. A ketone can be generally represented by the chemical formula: R₁(CO)R₂.

- Thin layer chromatography

Thin layer chromatography (TLC) is a chromatography technique used to separate chemical compounds ^[1]. It involves a stationary phase consisting of a thin layer of adsorbent material, usually silica gel, aluminium oxide, or cellulose immobilised onto a flat, inert carrier sheet. A liquid phase consisting of the solution to be separated is then dissolved in an appropriate solvent and is drawn up the plate via capillary action,

- Is bupropion (Zyban) causing deaths?

From 1 February to 30 June 2001, 277 602 prescriptions for the smoking cessation drug bupropion hydrochloride (Zyban, GlaxoSmithKline) were processed. The Health Insurance Commission approved 343 737 prescriptions for bupropion between 1 February and 30 June.1 Comparing this figure with the 277 602 processed scripts, some 66 135 (19.2%) scripts went unfilled. One reason for this may have been extensive publicity given to reports of deaths and numerous adverse reactions following bupropion use.

- Should we treat leuchkmia in children?

In the late 1940s, childhood leukaemia was still an incurable and fatal disease. Duration of survival had been improved marginally by the use of blood transfusion and the early antibiotics, with up to 10% of children entering partial remission,

- VOLATILE OILS AND FRACTIONS OF VOLATILE OILS

Volatile or essential oils may be defined as oily liquids which are entirely, or almost entirely, volatile without decomposition. A few, e.g. oil of anise, are solid at 15.5° c., but melt to form a liquid at slightly higher temperatures. Those volatile oils prepared other than by distillation, e.g. oil of lemon, contain a small proportion of non-volatile matter.

- Leishmaniasis

Several species of Leishmania are pathogenic for man: L. donovani causes visceral leishmaniasis  (Kala-azar, black disease, dumdum fever); L. tropica (L. t. major, L. t. minor and L. ethiopica) cause cutaneous leishmaniasis    (oriental sore, Delhi ulcer, Aleppo, Delhi or Baghdad boil); and L. braziliensis (also, L. mexicana and L. peruviana) are etiologic agents of mucocutaneous leishmaniasis (espundia, Uta, chiclero ulcer).