Winterbottom’s sign
(Science: clinical sign) swelling of the posterior cervical lymph nodes, characteristic of early stages of african trypanosomiasis; useful for surveys or control of migrations from endemic areas of persons with preclinical infections.
Winterbottom’s sign (Science: clinical sign) swelling of the posterior cervical lymph nodes, characteristic of early stages of african trypanosomiasis; useful for surveys or control of migrations from endemic areas of persons with preclinical infections...
Planktons are microscopic organisms that live suspended in aquatic habitats. There are two groups: the phytoplanktons an..
It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..
Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...
This tutorial looks at the mutation at the gene level and the harm it may bring. Learn about single nucleotide polymorph..
