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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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In 1864, the first barbiturate (barbituric acid) was synthesized.

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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen Formation of additional eyes in Drosophila caused by the abnormal expression of a master control gen
Methods to Document Peripheral Pulses A. Stick Figure Peripheral Pulse Documentation B. Tabular Peri Methods to Document Peripheral Pulses A. Stick Figure Peripheral Pulse Documentation B. Tabular Peri
Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow Pneumothorax. Figure illustrates how puncture of thoracic wall and tearing of pleural membrane allow
(a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D (a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D
Links Between Hand and Mouth Links Between Hand and Mouth
Nap master Nap master
Video: Homologous chromosomes during prophase I - Animation

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