Over the past decade, the development of three-dimensional mammalian cell organization--called human organoids--from stem cells has provided a framework for future clinical therapies. As human organoid research progresses, we also need to keep in mind the cross-cultural and ethical dimensions of human organoids research. Our review article aims to…

A major challenge in teaching organ development and disease is deconstructing a complex choreography of molecular and cellular changes over time into a linear stepwise process for students. As an entry toward learning developmental concepts, I propose two inexpensive hands-on activities to help facilitate learning of (1) how to identify defects in…

A study was conducted to prove that a large blood or xylem vessel could conduct 256 times more fluid than a vessel or a pipe that is four times smaller. The result of this study proved that if arteriosclerosis causes an artery to loose half its effective diameter, the blood flow would be reduced by fifteen-sixteenths.

Selenium is an essential nutrient to the human body, but it can reach toxic levels causing a disease called selenosis. This article discusses selenium, its geographical distribution, toxicity, nutritional role, and carcinogenicity. (MA)

The life cycle and health hazards resulting from the guinea worm, Dracunculus medinensis, are described. (BB)

Recommendations on how biology teachers can incorporate information into their lessons on cardiovascular disease and the importance of students understanding this disease are discussed. The result of a cardiovascular knowledge test given to college students shows the lack of knowledge students have about this subject. (KR)

Presents a problem-based, discovery-oriented activity on sickle-cell anemia that has been used for five years with more than 3000 secondary-level students and 200 teachers. (WRM)