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By Jiwon Choi, VI Form
Editor’s Note: This STEM Fellowship project by Jiwon won the Worcester Regional Science and Engineering Fair (1st out of 130+ students). She placed third out of all 200+ projects at the Massachusetts Science and Engineering Fair allowing her to compete at 2019 ISEF in Phoenix.
Three-dimensional (3D) bioprinting is one of the most promising methods of tissue engineering as it provides unprecedented versatility and precision in delivering cells and biomaterials to desirable places. However, limitations still exist in the availability of bioinks with natural bio-macromolecular components. In this research, chicken albumin is evaluated as a potential bioink for direct extrusion bioprinting of hollow constructs through alginate-templated crosslinking. Channel diameter, wall thickness, and bioink feed rates are calculated to assess the printing performance of the alginate-based bioink. It is shown that an albumin-based bioink with as low as 1.33% of total alginate concentration can be employed to successfully print microfibrous hollow constructs with a uniform diameter.
By Clara Hua, IV Form
Annotated Diagram: Human Immunodeficiency Virus
Editor’s Note: The “Biology 30” class zoomed in to examine the cellular (and sub-cellular) impacts and zoomed out to consider some of the economic, geo-political, environmental and cultural factors that have an influence on the spread of this disease. An Annotated Diagram is a formal sketchnote that aims to demonstrate understanding of the information by presenting how the information (the full story of HIV/AIDS) was processed.
By Matt Walsh, VI Form, Laura Sabino, V Form, and Maddie Wass, V Form
Mitotic Cell Division Artifact of Learning
Editor’s Note: See the image below of the whiteboard artifact images for the description of the assignment in Advanced Biology.
By Samantha Wang, IV Form
International Brain Bee Neuroscience Competition
What is Brain Bee?
Brain Bee is a neuroscience competition for teenagers from around the world. The initiative of this competition, according to its founder Dr. Norbert Myslinski, is to find better solutions for brain disorders. Every year, Brain Bee is first held at the state level. Winners of each state then compete in the country’s Regional Brain Bee, and one representative from each Regional Brain Bee will be sent to the International Brain Bee World Championship. This competition assigns a variety of tasks to its participants. The first part of the Brain Bee is to answer multiple-choice questions, which have around thirty questions about either the brain’s structure and function or pathology and treatment of brain disorders. Participants are then given brain models, where they are asked to distinguish parts of a brain and state the functions they perform. The last part involves the most interesting task I have ever experienced in any competition: four “patients” with different brain disorders, with acting from the volunteers of the organization, tell the specific life experience with their diseases. The participants are asked to diagnose their neurological or psychiatric conditions. (more…)
By Nicola Hartmann, VI Form
Carbohydrate Metabolism Pathway & Flow Chart
By Cadence (Catie) Summers, IV Form
Green Sea Turtle – Chelonia mydas & Marine Turtle Exhibition
Green Sea Turtle – Chelonia mydas
Stage in Maturity – Adult (more…)