WordNet

having incalculable monetary, intellectual, or spiritual worth (同)priceless
having great material or monetary value especially for use or exchange; "a valuable diamond"
something of value; "all our valuables were stolen"
having worth or merit or value; "a valuable friend"; "a good and worthful man" (同)worthful
the positive quality of being precious and beyond value (同)preciousness, pricelessness, valuableness

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Electrochemical enzymeless detection of superoxide employing naringin-copper decorated electrodes.

Madhurantakam S1, Selvaraj S1, Nesakumar N2, Sethuraman S1, Balaguru Rayappan JB3, Maheswari Krishnan U4.
Biosensors & bioelectronics.Biosens Bioelectron.2014 Sep 15;59:134-9. doi: 10.1016/j.bios.2014.03.029. Epub 2014 Mar 27.
Flavonoid-metal ion complexes are a new class of molecules that have generated considerable interest due to their superior anti-oxidant and pharmacological activities. The metal ion present in these complexes can participate in redox reactions by toggling between different oxidation states. This pro
PMID 24721424

Yan J1, Xu Y2, Hu B3, Alnajm S4, Liu L5, Lu Y6, Sun Z7, Cheng F8.
Journal of theoretical biology.J Theor Biol.2014 Aug 7;354:48-53. doi: 10.1016/j.jtbi.2014.03.026. Epub 2014 Mar 24.
Irritable bowel syndrome (IBS) is a chronic functional gastrointestinal disorder. Its symptoms include chronic abdominal pain, bloating gas, diarrhea and constipation. Many IBS patients also have psychological symptoms like depression or anxiety. These unpleasant symptoms significantly lower patient
PMID 24675620

Dynamic mitochondrial changes during differentiation of P19 embryonic carcinoma cells into cardiomyocytes.

Jin J1, Xuan QK1, Zhou LJ1, Shi CM2, Song GX1, Sheng YH1, Qian LM1.
Molecular medicine reports.Mol Med Rep.2014 Aug;10(2):761-6. doi: 10.3892/mmr.2014.2315. Epub 2014 Jun 10.
Murine P19 embryonal carcinoma cells are multipotent cells that can differentiate into cardiomyocytes when treated with dimethyl sulfoxide. This experimental model provides an invaluable tool to study different aspects of cardiac differentiation, such as the function of cardiac‑specific transcript
PMID 24920049

斎藤靖二
化石 (93), 131-135, 2013-03-31
… The collections provide information invaluable for many science fields including systematics. …
NAID 110009603712

Hampshire Steve,ハンプシャースティーブ
都市経営 2, 63-70, 2013-03-15
… However for the language student it remains an invaluable learning resource. …
NAID 120005282375

寺下隆夫,楠田瑞穂
近畿大学農学部紀要 46, 343-353, 2013-03-00
… [Synopsis] Tricholoma matsutake is one of the most delicious, and invaluable mushrooms that are edible in Japan, China and Korea. …
NAID 120005298688