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Tag Archives: evolution
Malaria, toxoplasmosis, and related diseases are caused by infection with unicellular parasites called Apicomplexa. Their name refers to the elaborate invasion machinery that occupies the apical end of the parasite cell. This apparatus allows the parasite to force its way … Continue reading
It’s a question half as old as time. “Where did viruses come from?” Over the last few years there has been quite a lot of activity in this area, in particulraly looking at whether the relatively new-discovered “giruses” (giant DNA … Continue reading
MicrobiologyBytes likes a good hypothesis – one that really makes you think, even if there’s not much actual data to support it. So here’s one for you: fungi ate the reptiles? “Here are two indisputable facts: we are living in … Continue reading
Rapid evolution of RNA viruses is intimately linked to their success in overcoming the defenses of their hosts. Several studies have shown that rates of viral evolution can vary dramatically among distantly related viral families. Variability in the speed of … Continue reading
Bacteria are generally distinguished from the cells of fungi, plants, and animals (eukaryotes) not only by their much smaller size but also by the absence of certain subcellular structures such as nuclei, internal organelles, and microtubules. Using state-of-the-art microscopy, this … Continue reading
Working alone, a single yeast cell in a dilute solution of sucrose would never take in enough glucose and fructose to be able to grow and divide. But by cooperating, clumps of yeast in the same solution have a chance. Continue reading
Biologists have uncovered virus fragments from the same family of the modern Hepatitis B virus locked inside the genomes of songbirds such as the modern-day zebra finch. This article marks the first time that endogenous hepadnaviruses have been found in … Continue reading
Traditional treatment of bacterial infections relies heavily on the use of antibacterial compounds that either kill bacteria (bactericidal) or inhibit their growth (bacteriostatic). Typically, the targets for the main conventional antibiotics are essential cellular processes such as bacterial cell wall … Continue reading