Bug

I began using a retinol cream two days ago and stopped today after noticing irritation. My skin feels and looks papery and it gives me the appearance of being wrinklier and older. I'm wondering if this is a normal side effect while getting used to retinol or if I shouldn't be using it at all. Thank you!

A patient with IgA deficiency presents with anaphylaxis and dark urine due to hemolysis after receiving a blood transfusion that was typed and cross-matched correctly. What is the pathophysiology behind what is occurring?

More specifically, what is the benefit of plasmids to prokaryotes and how does this relate to the use of antibiotics? Why is the difference in ribosomes important. Thank you!

I am 25 and starting to notice sun damage and fine lines growing around my eyes, I've been told that Vit. C works wonders and have spent time reading reviews and can't really come to any conclusions about which product is the best quality. I'm looking to spend around $30 (give or take) and want something that I can use as a part of my skin care regimen to slow down the increasing appearance of wrinkles. What should i look for?

I'm confused by the way the first part of the story is told and I want to see how its portrayed on film, is this version true enough to the novel?

This is stated in "Caliban" by Roberto Fernández Retamar on pg. 8

http://books.google.com/books?id=VNGq_0RacucC&prin...

I'm thinking of buying an Escape and I don't know what the XLT means.

I'm in my early twenties and have been thinking about a nipple piercing but I want to be able to breast feed later.

Basically I'm not familiar with this term and how it applies to astronomy, I know it has something to do with galaxies and their morphology but some help would be great! Thank you!

How do they differ in mass, types of stars, star configuration, gas, etc?

distributed uniformly throughout the volume of the cluster?

distributed mostly in and around the galaxies in the cluster and not in the voids between galaxies?

distributed mostly in the voids between galaxies and not within the galaxies themselves?

A. The galaxies are slower-rotators than other galaxies, and the slower-speed collisions between interstellar clouds produce more star formation.

B. A recent collision with another galaxy has triggered a wave of star formation.

C. A recent series of supernovae has compressed the interstellar medium and started a new wave of star formation.

D. The galaxies are newly formed and are undergoing their initial, rapid star formation

“Starlike in appearance, its spectrum showing very high redshift, energy output of about 1000 galaxies from a small region about 1 light year across”?

Most of the light from a galaxy comes from the inner parts. If this means that most of the galaxy's mass is also in the inner region, then how would we expect the galaxy's speed of rotation to behave in its OUTER region?

A. The rotation speed should decrease smoothly with increasing distance from the center, following a Keplerian curve.

B. The rotation speed should decrease sharply to zero at the outer edge of the visible galaxy.

C. The rotation speed should increase with increasing distance from the center.

D. The rotation speed should not change appreciably with increasing distance from the center (i.e., a “flat” rotation curve).