Actin Microfilaments, Myosin and Muscle: Cytoskeletal Control of the Cortex and Cytoplasmic Membrane

Fingers of the cytoplasmic membrane can be rapidly projected by the cytoskeleton and just as rapidly contracted. The membrane is pushed out by the addition of protein subunits to rigid actin microfilaments. Motor proteins, such as myosin, can attach to different actin microfilaments and force … Continue reading Actin Microfilaments, Myosin and Muscle: Cytoskeletal Control of the Cortex and Cytoplasmic Membrane

Toxoplasmosis – Parasitic Disease: Spectrum of Human Disease Caused by the Cat Parasite, T. gondii

Toxoplasma gondii, a protozoan parasite, occurs worldwide and infects more than 500 million people. Fortunately, most people don’t know they have the parasite. Toxoplasmosis symptoms in humans are variable. Acute toxoplasmosis Acute toxoplasmosis occurs when a person is first exposed to the parasite. Many people … Continue reading Toxoplasmosis – Parasitic Disease: Spectrum of Human Disease Caused by the Cat Parasite, T. gondii

Arcachon Oyster Problems in France: Disease and Pollution Damage Oyster Production in France

The huge lagoon at Arcachon produces all the young oysters for culturing in France, and there have been a number of setbacks and causes for concern. Arcachon Bay This large (15,000 hectares) lagoon in South West France has some of the finest oysters in the … Continue reading Arcachon Oyster Problems in France: Disease and Pollution Damage Oyster Production in France

Whalers Logbooks: Preserve Useful Whale Distribution and Population Information

Ships’ captains kept daily records of exact location and weather conditions. Whalers would also record sightings and capture of all species of whale they came across. Sextants and Chronometers In the eighteenth century the accurate determination of latitude was possible with the use of sextants … Continue reading Whalers Logbooks: Preserve Useful Whale Distribution and Population Information

Oral Herpes Treatment & Prevention: Medications and Measures to Reduce the Severity of HSV Infection

Prevention of Oral Herpes Recurrent Infection Unfortunately, a vaccine to prevent herpes virus infection is not yet available although research continues for an effective vaccine. Preventing factors that precipitate recurrent oral herpes outbreaks can reduce the frequency of cold sore and other types of herpes … Continue reading Oral Herpes Treatment & Prevention: Medications and Measures to Reduce the Severity of HSV Infection