It is currently 18 Jan 2018, 11:54

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# In response to viral infection, the immune systems of mice

Author Message
TAGS:

### Hide Tags

Manager
Joined: 15 May 2006
Posts: 109

Kudos [?]: [0], given: 0

Location: Louvain, Belgium

### Show Tags

20 Jun 2006, 08:53
not clear about the last line " caused by antibodies to herpes virus"

Scientists hypothosize that anti-bodies cause this disease in which they attach to the the protein on the surface of this virus

Also, the protein is similar to that on the eye ... so the antibodies if produced can attach itself to the protein on the eye and cause the disease too.
Option E states this

Kudos [?]: [0], given: 0

Senior Manager
Joined: 09 Mar 2006
Posts: 444

Kudos [?]: 8 [0], given: 0

### Show Tags

20 Jun 2006, 08:58
Clearly D

E is out because there are may be other factors that cause the deasease, not necessarily antibodies. So it doesn't prove or refute anything.

Kudos [?]: 8 [0], given: 0

Manager
Joined: 15 May 2006
Posts: 109

Kudos [?]: [0], given: 0

Location: Louvain, Belgium

### Show Tags

20 Jun 2006, 09:02
option D states that there are no antibodies but the mice survive the infection ???

this makes the antibodies redundant ... mice cannot survive the infection without antibodies

Kudos [?]: [0], given: 0

Senior Manager
Joined: 09 Mar 2006
Posts: 444

Kudos [?]: 8 [0], given: 0

### Show Tags

20 Jun 2006, 09:13
foolz_rulz wrote:
option D states that there are no antibodies but the mice survive the infection ???

this makes the antibodies redundant ... mice cannot survive the infection without antibodies

See my additions to the previous post.

As to your arguments, there are plenty of deseases that humans survive for years without developing antibodies. With reduced immunity, one doesn't develop enough antibodies even to the most common deseases. However, taking antibiotics, one can survive for years.

Now to the question, we are told nothing about how those mice actually survived the desease. May be they were given antibiotics or other drugs to suppress the desease.

Kudos [?]: 8 [0], given: 0

Manager
Joined: 22 May 2006
Posts: 176

Kudos [?]: 8 [0], given: 0

### Show Tags

20 Jun 2006, 09:43
I'll go with D.

Kudos [?]: 8 [0], given: 0

SVP
Joined: 30 Mar 2006
Posts: 1727

Kudos [?]: 105 [0], given: 0

### Show Tags

20 Jun 2006, 09:49
Will go with D.

The hypothesis is that the keratitis are formed by the antibodies for the herpes virus.
To support this hypothesis we have to show that mice that dont produce the antibodies done contract heratitis.
THis is stated in D

Kudos [?]: 105 [0], given: 0

VP
Joined: 02 Jun 2006
Posts: 1257

Kudos [?]: 113 [0], given: 0

### Show Tags

20 Jun 2006, 09:59
D. There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.

Kudos [?]: 113 [0], given: 0

Director
Joined: 06 May 2006
Posts: 790

Kudos [?]: 40 [0], given: 2

### Show Tags

20 Jun 2006, 13:20
D.
_________________

Uh uh. I know what you're thinking. "Is the answer A, B, C, D or E?" Well to tell you the truth in all this excitement I kinda lost track myself. But you've gotta ask yourself one question: "Do I feel lucky?" Well, do ya, punk?

Kudos [?]: 40 [0], given: 2

SVP
Joined: 24 Sep 2005
Posts: 1883

Kudos [?]: 407 [0], given: 0

### Show Tags

21 Jun 2006, 04:43
OA is D

Kudos [?]: 407 [0], given: 0

Current Student
Joined: 29 Jan 2005
Posts: 5201

Kudos [?]: 443 [0], given: 0

### Show Tags

21 Jun 2006, 07:26
Phew! (D) supports the scientists claim.

Tip, on "which of the following" CRs, always start with E and work up.

2:16

Kudos [?]: 443 [0], given: 0

Manager
Joined: 02 Aug 2006
Posts: 211

Kudos [?]: 391 [0], given: 0

Location: Taipei
In response to viral infection, the immune systems of mice [#permalink]

### Show Tags

02 Sep 2006, 21:03
In response to viral infection, the immune systems of mice typically produce antibodies that destroy the virus by binding to proteins on its surface. Mice infected with a herpesvirus generally develop keratitis, a degenerative disease affecting part of the eye. Since proteins on the surface of cells in this part of the eye closely resemble those on the herpesvirus surface, scientists hypothesize that these cases of keratitis are caused by antibodies to herpesvirus.

Which of the following, if true, gives the greatest additional support to the scientistsâ€™ hypothesis?

A. Other types of virus have surface proteins that closely resemble proteins found in various organs of mice.
B. There are mice that are unable to form antibodies in response to herpes infections, and these mice contract herpes at roughly the same rate as other mice.
C. Mice that are infected with a herpesvirus but do not develop keratitis produce as many antibodies as infected mice that do develop keratitis.
D. There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.
E. Mice that have never been infected with a herpesvirus can sometimes develop keratitis.

Kudos [?]: 391 [0], given: 0

Director
Joined: 28 Dec 2005
Posts: 748

Kudos [?]: 19 [0], given: 0

### Show Tags

02 Sep 2006, 23:24
D?

Kudos [?]: 19 [0], given: 0

CEO
Joined: 20 Nov 2005
Posts: 2890

Kudos [?]: 340 [0], given: 0

Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008

### Show Tags

02 Sep 2006, 23:26
D

If mice can not produce antibodies in respose to herpesvirus then they can't develop keratitis. Hence the only cause of keratitis is the antibodies developed in response to herpesvirus.
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

Kudos [?]: 340 [0], given: 0

Director
Joined: 23 Jun 2005
Posts: 838

Kudos [?]: 94 [0], given: 1

GMAT 1: 740 Q48 V42
Re: CR-Mice infected with a herpesvirus [#permalink]

### Show Tags

03 Sep 2006, 02:28
jerrywu wrote:
Scientists hypothesize that these cases of keratitis are caused by antibodies to herpesvirus.

A. Other types of virus have surface proteins that closely resemble proteins found in various organs of mice.
B. There are mice that are unable to form antibodies in response to herpes infections, and these mice contract herpes at roughly the same rate as other mice.
C. Mice that are infected with a herpesvirus but do not develop keratitis produce as many antibodies as infected mice that do develop keratitis.
D. There are mice that are unable to form antibodies in response to herpes infections, and these mice survive these infections without ever developing keratitis.
E. Mice that have never been infected with a herpesvirus can sometimes develop keratitis.

D for me. Hypothesis is about keratitis and not the herpes infection itself. So, in D, mice without antibodies do not develop keratitis -> clearly supports hypothesis.

Kudos [?]: 94 [0], given: 1

Manager
Joined: 29 Jul 2006
Posts: 89

Kudos [?]: 5 [0], given: 0

D for me as well [#permalink]

### Show Tags

03 Sep 2006, 14:14
D for me as well

Kudos [?]: 5 [0], given: 0

Senior Manager
Joined: 27 Jul 2006
Posts: 292

Kudos [?]: 18 [0], given: 0

### Show Tags

04 Sep 2006, 00:05
D is the right one here

Kudos [?]: 18 [0], given: 0

VP
Joined: 21 Aug 2006
Posts: 1010

Kudos [?]: 39 [0], given: 0

### Show Tags

04 Sep 2006, 01:50
One more vote for D
_________________

The path is long, but self-surrender makes it short;
the way is difficult, but perfect trust makes it easy.

Kudos [?]: 39 [0], given: 0

Senior Manager
Joined: 15 Aug 2004
Posts: 325

Kudos [?]: 12 [0], given: 0

### Show Tags

04 Sep 2006, 04:00
Yup D...

Kudos [?]: 12 [0], given: 0

VP
Joined: 16 Jul 2009
Posts: 1478

Kudos [?]: 1560 [0], given: 2

Schools: CBS
WE 1: 4 years (Consulting)
Re: CR - Viral infection [#permalink]

### Show Tags

29 Jul 2010, 08:26
Im afraid to say that answer is B.
_________________

The sky is the limit
800 is the limit

GMAT Club Premium Membership - big benefits and savings

Kudos [?]: 1560 [0], given: 2

VP
Joined: 15 Jul 2004
Posts: 1438

Kudos [?]: 229 [0], given: 13

Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)
Re: CR - Viral infection [#permalink]

### Show Tags

29 Jul 2010, 09:59
noboru wrote:
Im afraid to say that answer is B.

I get D at the following link
cr-a-must-to-try-30855.html?hilit=In%20response%20to%20viral%20infection,#p209908

Kudos [?]: 229 [0], given: 13

Re: CR - Viral infection   [#permalink] 29 Jul 2010, 09:59

Go to page   Previous    1   2   3   4    Next  [ 67 posts ]

Display posts from previous: Sort by