acellular
Adjective
Meaning
not made up of or divided into cells
Source: WordNetSynonyms
Antonyms
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Above 30% of the acellular part of bone consists of the organic components, and 70% of salts.sfn The strands of collagen give bone its tensile strength, and the interspersed crystals of hydroxyapatite give bone its compressional strength.
For adults and children over seven, the Td vaccine (tetanus and diphtheria) or Tdap (tetanus, diphtheria, and acellular pertussis) is commonly used.
Currently administered human anthrax vaccines include acellular (United States) and live spore (Russia) varieties.
Most viral vaccines are based on live attenuated viruses, while many bacterial vaccines are based on acellular components of micro-organisms, including harmless toxin components.
Some examples are "DTaP" for diphtheria and tetanus toxoids and acellular pertussis vaccine, "DT" for diphtheria and tetanus toxoids, and "Td" for tetanus and diphtheria toxoids.
The 'a' in DTaP and Tdap stands for 'acellular,' meaning that the pertussis component contains only a part of the pertussis organism."