From an InterestingEngineering.com online article:
“We are extremely proud of what we have accomplished, from the ability to 3D bioprint human cardiac tissue last summer to a mini heart with full structure now. These milestones are a testament to the hard work of our team and the proprietary process we have developed that enables this type of scientific achievement,” said Birla in a press release. “We believe we are at the forefront of whole heart bioengineering, a field that has matured quickly over the last year, and well-positioned to continue our rapid scientific advancement.”
BIOLIFE4D, the biotech company based out of Chicago, announced it has successfully demonstrated the ability to 3D bioprint a mini human heart, a big step in someday printing out a full-sized human heart that can be used for a transplant.
Researchers say they’ve successfully plunged human livers to subzero temperatures and then warmed them back up.
Researchers have identified how Salmonella ‘persister’ cells can spread antibiotic resistance genes in mice intestines. 
A blood test to detect the brain changes of early Alzheimer’s disease has moved one step closer to reality. Researchers from Washington University School of Medicine in St. Louis report that they can measure levels of the Alzheimer’s protein amyloid beta in the blood and use such levels to predict whether the protein has accumulated in the brain. The findings represent a key step toward a blood test to diagnose people on track to develop the devastating disease before symptoms arise.