LUNG BLOOD SURPRISE
but that belief appears to be mistaken.
Platelets, also known as thrombocytes (= ‘clot cells’) and found in large
numbers in mammalian blood, are vital for blood clotting. They are cell
fragments, without a nucleus, derived from megakaryocytes (= ‘
large-nucleus cells’), which in turn come from stem cells capable of producing
many different types of blood cells.
In experiments involving mice, researchers from the University of
California at San Francisco found that their lungs made not just a few
of the body’s platelets (as was already known), but perhaps even most.
Using new technology, they were able to watch this production directly.
A “huge” store of megakaryocytes (which appear to have originated in
the marrow)—one million in each mouse lung—was found to be producing platelets at the rate of some 10 million per hour, more than half of the
body’s total platelet production. And inside the lung tissue, they also found
a “previously unknown pool of blood stem cells that makes this happen”.
All this suggests “a more sophisticated view of the lungs” which indicates
lungs are “a key partner in formation of crucial aspects of the blood,” says one of
the researchers, Mark Looney. He adds that this finding in mice “strongly suggests
the lung may play a key role in blood formation in humans as well”.
The article aptly asks: “So how did we miss such a crucial biological process this whole
time?” The history of science is full of instances of the ‘received wisdom’ effect; since ‘
everyone knows’ something, it prevents people from looking for (or even accepting, sometimes) the opposite.
Crew, B., An unexpected new lung function has been found—they make blood, sciencealert.com, March 2017.
SMART NEANDERTALS USED ASPIRIN AND PENICILLIN?
Based on the studies of DNA remnants in the tartar on the teeth of Neandertals, scientists
have concluded that Neandertals used a plant source of aspirin and possibly dosed
themselves on penicillin by eating the penicillin mould.
“Their behaviour and their diet looks a lot more sophisticated and a lot more like us
in many ways,” said Professor Alan Cooper, the New Zealander who is director of the
University of Adelaide’s Australian Centre for Ancient DNA.
“You know, we’ve got a guy self-medicating …
“And, here he is eating aspirin [poplar bark] and we’re finding penicillin mould
Weyrich, L.S. et al., Neanderthal behaviour, diet, and disease inferred from ancient DNA in dental calculus,
Nature, March 2017 | doi: 10.1038/nature21674.
Briggs, H., Neanderthals ‘self-medicated’ for pain, bbc.com, March 2017.
Once again we find that the research supports the biblical creationist view that
Neandertals were fully human descendants of Noah and his family, rather than changing
into something else (that is, evolving).
SUN DIRECTS ANTS’ PATHS
mirrored the sun so that it appeared to be in the opposite half of the sky while hiding
the direct sun with an opaque board. The team observed that when ants were moving
backward and dragging food they would on occasions release it, rotate and walk a few
steps forward, return to the food, and drag it backward in a now-corrected direction.
The researchers concluded: “Our results suggest that ants do not adjust
their direction of travel based on the perceived scene while going
backward. Instead, they maintain a straight direction using their
Similar navigational ability has been observed throughout
nature, for example in honey bees. See creation.com/bee.
Schwarz, S. et al., How ants use vision when homing backward, Curr. Biol. 27( 3):401–
407, February 2017 | doi: 10.1016/ j.cub.2016.12.019.
CREATION NEWS AND VIEWS FOCUS
CREATION.com 7 Creation 39( 3) 2017