Health

Bacteria detected in tattoo and permanent makeup inks

Researchers have detected anaerobic and aerobic bacteria in commercial tattoo and permanent makeup inks. The findings, reported in Applied and Environmental Microbiology demonstrate that the inks could be a source of human ...

Immunology

Growth factors linked to stem cell aging in bone marrow study

Our bone marrow—the fatty, jelly-like substance inside our bones—is an unseen powerhouse quietly producing 500 billion new blood cells every day. That process is driven by hematopoietic stem cells that generate all of ...

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