Types & Characteristics of Genres: Poetry. A main literary genre is poetry. All poems share specific characteristics. For example, poetry is written in lines and stanzas instead of sentences and paragraphs. Some poems follow strict rules as to the number and length of lines and stanzas, whereas many poems are much more free-flowing.
Freebase(0.00 / 0 votes)Rate this definition: Methotrexate. Methotrexate, abbreviated MTX and formerly known as amethopterin, is an antimetabolite and antifolate drug. It is used in treatment of cancer, autoimmune diseases, ectopic pregnancy, and for the induction of medical abortions. It acts by inhibiting the metabolism of folic acid.
A twenty fold difference between highest and lowest peak levels (C max: 0.11 to 2.3 micro-molar after a 20 mg/m 2 dose) has been reported. Significant interindividual variability has also been noted in time to peak concentration (T max: 0.67 to 4 hrs after a 15 mg/m 2 dose) and fraction of dose absorbed..5 mgMethotrexate is an anti metabolite used in the treatment of certain neoplastic diseases, severe psoriasis, and adult rheu-matoid arthritis. Chemically methotrexate is N -[4-[[(2,4-diamino-6-pteridinyl)methyl]methyl-amino]benzoyl]-L-glutamic acid.