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Stemonitis axifera requires about 20 hours to finish making its fruit bodies. Of this, eight hours are needed for induction of the sporangia and the development of the stalk and the columella, six hours more for the sporocarps to produce pigment and mature, and an additional six until the spores are discharged.
Mucor spores or sporangiospores can be simple or branched and form apical, globular sporangia that are supported and elevated by a column-shaped columella. Mucor species can be differentiated from molds of the genera Absidia , Rhizomucor , and Rhizopus by the shape and insertion of the columella, and the lack of stolons and rhizoids .
The site began in 1998 as a pen and paper questionnaire called the Harvard Cancer Risk Index. [2] In January 2000, The Harvard Cancer Risk Index developed into an online assessment and was renamed Your Cancer Risk, and offered assessments for four cancers: breast, colon, lung, and prostate. Six months later, eight additional cancers were added. [3]
A sporangium (from Late Latin, from Ancient Greek σπορά (sporá) 'seed' and ἀγγεῖον (angeîon) 'vessel'); pl.: sporangia) [1] is an enclosure in which spores are formed. [2] It can be composed of a single cell or can be multicellular. Virtually all plants, fungi, and many other groups form sporangia at some point in their life cycle.
The sporangium has an operculum, epiphragm, columella, sporangial jacket, a spore bearing layer, and nematodontous teeth. Nematodontous teeth are composed of whole, thickened dead cells. [ 10 ] Although nematodontous teeth are not hygroscopic , [ 11 ] they may aid in spore dispersal through small movements (they do not move much). [ 9 ]
The term columella is also used to refer to story 1 to story 4 (S1 – S4) cells in the root cap, located apically of the quiescent centre. [citation needed] In vascular plants, columella tissue helps the roots to perceive gravity. Within columella cells, the amyloplasts and Golgi apparatus organelles tend to fall to the bottom third of the ...
Cancer slope factors (CSF) are used to estimate the risk of cancer associated with exposure to a carcinogenic or potentially carcinogenic substance. A slope factor is an upper bound, approximating a 95% confidence limit , on the increased cancer risk from a lifetime exposure to an agent by ingestion or inhalation .
There are over 20 cancer-specific scales such as the FACT-B for breast cancer and FACT-C for colorectal cancer and 27 symptom indexes which are short, 6 or 7 item subscales which focus only on symptoms. 12 treatment-specific measures focus on the quality of life impacts that patients receiving enteral feeding or with neurotoxicity experience ...