Crosslinking fixatives
... Note: Even the most careful fixation does alter the sample and introduce artifacts that can interfere with interpretation of cellular ultrastructure. A prominent example is the bacterial "mesosome", which was thought to be an organelle in gram-positive bacteria in the 1970s, but was later shown by n ...
... Note: Even the most careful fixation does alter the sample and introduce artifacts that can interfere with interpretation of cellular ultrastructure. A prominent example is the bacterial "mesosome", which was thought to be an organelle in gram-positive bacteria in the 1970s, but was later shown by n ...
Snímek 1
... In 1992, the California Air Resources Board (CARB) identified formaldehyde as a toxic air contaminant based primarily on the determination that it was a human carcinogen with no known safe level of exposure. At concentrations above 0.1 ppm in air formaldehyde can irritate the eyes and mucous membran ...
... In 1992, the California Air Resources Board (CARB) identified formaldehyde as a toxic air contaminant based primarily on the determination that it was a human carcinogen with no known safe level of exposure. At concentrations above 0.1 ppm in air formaldehyde can irritate the eyes and mucous membran ...
Formaldehyde
Formaldehyde is a naturally-occurring organic compound with the formula CH2O. It is the simplest aldehyde and is also known by its systematic name methanal. The common name of this substance comes from its similarity and relation to formic acid.Formaldehyde is an important precursor to many other materials and chemical compounds. In 1996, the installed capacity for the production of formaldehyde was estimated to be 8.7 million tons per year. It is mainly used in the product of industrial resins, e.g., for particle board and coatings.In view of its widespread use, toxicity, and volatility, formaldehyde is a significant consideration for human health. In 2011, the US National Toxicology Program described formaldehyde as ""known to be a human carcinogen"".