By: Alice Shoaf
Biologists have long used the eyes as one of their benchmark classifications between vertebrates and invertebrates. More specifically, they have looked at the photoreceptors utilized by each species to help classify it; the two major photoreceptors being rhabdomeric and ciliary. Recent studies, however, have forced...
What are microorganisms?
By: Christyl Rivers
Microorganisms are everywhere. They support life as we know it. They can live far out in the atmosphere and have been found as high as twenty miles up. They also live deep into our soils, and even beneath rocks. They have been found alive deeper...
An overview of the Theileria parasites
By: Alicia M Prater PhD
Theileria is a genus of protozoan parasites (family Theileriidae, suborder Piroplasmorina) transmitted by ticks. Several species cause theileriosis in ruminants by multiplying in the white blood cells, causing tumor-like growth, and then invading the red blood cells. The Wellcome Trust estimates that 240 million cattle...
An overview of the Theileria parasites
By: Barbara Stanley
Theileria causes disease in domestic and wild animals as a parasite on ticks. Millions of animals are at risk every year. This parasite has the capability of causing a worldwide food shortage and total devastation to poor farmers in the Third World. According to the...
Researcher: Extinct animal bones inspired Greek myths
By: Terrence Aym
Could the Minotaur, Medusa and other creatures of Greek mythology have their roots in old bones?—specifically, the bones of prehistoric beasts?Adrienne Mayor, a Stanford University researcher of Classics and History of Science believes many of the myths may be traced back to...
By: B. J. Deming
The words “fun” and “bacteria” aren’t commonly associated together, especially by those of us who prefer not to think exactly how cheese is made, let alone what goes on in our septic tanks and wastewater treatment plants. Nonetheless, bacteria are everywhere, and...
An overview of the Theileria parasites
By: Amelia Emery
Tropical theileriosis and East Coast Fever are fatal diseases caused by infections of parasitic protozoa known as Theileria. The diseases affect cattle, water buffalo, yak, and other ruminants in Africa, the Middle East, and Asia. Introduced breeds of cattle that are more suseptable to the...
By: Jose Juan Gutierrez
What are amino acids? Amino acids are nitrogen containing organic molecules that can join together in chains called (poly-peptides) and form complex proteins. There are 20 basic amino acids of which 8 are essential (they must be obtained from food), and 12 are non-essential (the...
Growth factors involved in cell cycle regulation
By: Alicia M Prater PhD
The cell cycle is a complex mechanism that results in cell growth and propagation. In eukaryotes, such as humans, the cycle is divided into G1, S, G2, and M phases, where M represents the process of mitosis (i.e. cell division), S represents “synthesis&rdquo...
By: Thirumahal Muthukrishnan
Eukaryotic animal cells are enclosed by an outer cell membrane unlike the plant cells that have an external cell wall. This plasma membrane is semi-fluid and selectively permeable in nature. It consists of a phospholipids’ bi-layer with integral proteins embedded on the outer or inner...

 

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