Posted by: Dan | May 27, 2007

Cells Weekly #31

The quote of the week comes from Carl Linnaeus, by way of Jeremy, who responded to Nicolaus Steno’s and others’ claims that the Biblical Flood was responsible for the sedimentation of fossils by saying:

“He who attributes all of this to the Flood, which suddenly came and as suddenly passed, is verily a stranger to science and himself blind, seeing only through the eyes of others, as far as he sees anything at all.”

Now the weekly cell and molecular biology metablogging (I know, it’s a bit Daily Transcript-heavy, but how can I just pick one of Alex’s posts?!):

Science Creative Quarterly:


Gene Expression (classic):


Daily Transcript:

Science Sampler:

Eye on DNA:

Mouse Trap:

Carnivals of the week:
Encephalon #23, Tangled Bank #80, and 61st Skeptics’ Circle.

And four ScienceDaily picks below the fold:

Key pathway in synaptic plasticity discovered:

Scientists are keenly studying how neurons form synapses — the physical and chemical connections between neurons — and the “pruning” of neural circuits during development, not least because synaptic abnormalities may partially underlie many developmental and neurodegenerative diseases. Several key molecules are involved in normal synaptic formation, but their interactions are not well understood. Now neuroscientists have pieced together a direct linear pathway connecting three such molecules.

Stem cells provide clues to cancer spread:

Scientists have made an important discovery in understanding how cancers spread in what could lead to new ways of beating the disease. A new study uses embryonic stem cells to investigate how some tumours are able to migrate to other parts of the body, which makes the treatment of cancer much more difficult.

New adult brain cells may be central to lifelong learning:

The steady formation of new brain cells in adults may represent more than merely a patching up of aging brains, a new study has shown. The new adult brain cells may serve to give the adult brain the same kind of learning ability that young brains have while still allowing the existing, mature circuitry to maintain stability.

Stem cells may look malignant, not act it:

Bone marrow stem cells attracted to the site of a cancerous growth frequently take on the outward appearance of the malignant cells around them. But whether they contribute to cancer, as some scientists suspect, is not entirely clear. The findings contest the increasingly popular theory that bone marrow stem cells seed cancer. Instead, these cells might simply look like cancer, not act like it.



  1. […] at Migrations liked the videos I found showing DNA structure, packaging, and […]


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