Screening for endocrine disruption in artificial zebrafish for long-term risk assessment
Newly developed chemical substances or cosmetics can be distributed only after passing the risk assessment in human and environment. The developed product distribution is prohibited if it cannot pass the safety assessment for endocrine disruption, such as bisphenol A (BPA), removed from the market. The toxicity assessment of EDCs in the environmental aspect generally requires OECD testing on three species: Daphnia pulex, green algae, and zebrafish. Especially zebrafish is that similar to more than 90% human genes. However, zebrafish has recently become classified as a vertebrate animal testing, and it is limited tests with permission from a hospital or specific organization due to ethical issues for animal testing.
A pandemic side effect: Used masks polluting California coastal waters
Scott Wilson, The Washington Post
Dec. 11, 2020
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TIBURON, Calif. - The pale blue is easy to spot among the dry-brown reeds.
People walk here along the northern coast of the San Francisco Bay, crowding a path that bends to the contour of the shore. At the small pebble beach near a park called Blackies Pasture, a surgical mask is tangled in the marsh at the edge of the Bay. A little farther on is another, then another on the other side of the path, waiting to be blown into the sea.
Pamlico Community College instructor, programs featured in online article
By Sandy Wall
For most people, 2020 has been a drag. However, for Pamlico Community College Instructor Zac Schnell, this year actually has been pretty great, at least professionally.
The 31-year-old Wilmington native recently was featured in an EducationNC (EdNC) article. The story, written by EdNC’s Molly Osborne, highlighted Schnell and the college’s Environmental Science Technology and Environmental Management Technology programs that he leads.
It also spotlighted the four-week Study Abroad trip to the Philippines that Schnell organized in 2018.
Earlier this year, the gregarious Schnell was named the college’s 2020 Instructor of the Year, and he also began assisting with OSHA training for Continuing Education students.
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COVID SCIENCE-New vaccines may not be right for some cancer patients; solid sewage beats wastewater for tracking virus
Nancy Lapid
5 分钟阅读
Dec 9 (Reuters) - The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the virus.
mRNA vaccines may need more study for treating some cancer patients
COVID-19 vaccines that employ new messenger RNA (mRNA) technology to fend off the illness may require further testing before it becomes clear they are safe for cancer patients with solid tumors, cancer treatment experts say. That would include the vaccines from Pfizer Inc with partner BioNTech SE and from Moderna Inc. The vaccines work by carrying genetic instructions for making a protein from the virus that the immune system learns to recognize and defend against. The mRNA is encased in a microscopic packet called a lipid nanoparticle (LNP), or liposome, th