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Skin test

skin test

A method for determining induced sensitivity (allergy) by applying an antigen (allergen) to, or inoculating it into, the skin; induced sensitivity (allergy) to the specific antigen is indicated by an inflammatory reaction of one of two general kinds: 1) immediate, appears in minutes to an hour or so and in general is dependent upon circulating immunoglobulins (antibodies); 2) delayed, appears in 12 to 48 hours and is not dependent upon these soluble substances but upon cellular response and infiltration.

Synonym: cutaneous test, cutireaction test, skin reaction.


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Re: Re:

... in, but in most countries you can privately order a set of basic blood tests (blood cell counts, standard blood chemistry etc.), which already gives ... overwhelms the few bacteria that may end up in the sample from the skin, and because the needle is very sharp. For blood culture purposes the ...

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by snowathlete
Fri Dec 13, 2013 2:08 pm
 
Forum: Microbiology
Topic: What do you think these are, in my blood?
Replies: 16
Views: 9927

Re: Re:

... blood coagulation times and thus result in minor bleeding beneath the skin that causes the petechiae. I do not know where you are based in, but in most countries you can privately order a set of basic blood tests (blood cell counts, standard blood chemistry etc.), which already gives ...

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by biohazard
Fri Dec 13, 2013 8:13 am
 
Forum: Microbiology
Topic: What do you think these are, in my blood?
Replies: 16
Views: 9927

URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!

... STAINING (-) NUTRIENT BROTH CULTURE- Quite turbid, slightly cloudy, no skin NUTRIENT AGAR STREAK- Shape – Cocci, Yellow, 0.2-0.5m Glossy NUTRIENT ... Agar – Anaerobic BLOOD AGAR PLATE: B-Haemolysis HUGH AND LEIFSON’S O/F TEST: Negative ANTIBIOTIC SENSITIVITY- Resistant. CATALASE- NEGATIVE OXIDASE- ...

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by microbiologyhelp
Wed Nov 20, 2013 6:09 pm
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 7
Views: 6221

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... brain sizes might indeed vary racially in the same way that average skin coloring and average height do. Black Africans express the greatest variability in skin coloring. Their skin tone shades range from nearly black to nearly ...

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by Seth90210
Sat Oct 26, 2013 7:38 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 270119

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... brain sizes might indeed vary racially in the same way that average skin coloring and average height do. The claim of inequality among races ... any cherry-picking, such as would have enhanced the proportion of his test subjects who were above the average in the various African countries ...

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by DavidSims
Sat Oct 12, 2013 3:04 pm
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 72
Views: 270119
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