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BEI Resources Knowledge Base


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The Knowledge Base is an informational database assembled by our Support Specialists and Scientific Staff which provides additional knowledge about the BEI Resources program and reagents through questions and answers. In order to use the Knowledge Base, enter a keyword or phrase that best describes the information of interest. More >>
   

Showing 1 to 5 of 6 Results12
Do you distribute oocysts of Cryptosporidium parvum and cysts of Giardia intestinalis?

BEI Resources used to distribute oocysts of Cryptosporidium parvum up until 2008. Distribution was stopped due to low demand and the well documented loss of viability of oocysts after 4-6 months at 4oC. We do not distribute cysts of Giardia intestinalis due to difficulties in obtaining an external source and high probability of low demand for the cysts.
Author: BEI Resources
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Updated on: 4/15/2026 3:41:03 PM
How much bacteria is in a vial?

BEI Resources does not  titer the amount of bacteria per vial.  Bacteria are vialed from robust growth. Agar is used for growth whenever possible.    Bacteria that have to be grown in broth are concentrated down before vialing. 

Author: BEI Resources
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Updated on: 4/15/2026 3:30:01 PM
Do I have to use the media listed on your product sheet?

BEI Resources only confirms growth of the bacteria on or in the media listed   on   the product sheet. If you do want to use another media,   it is highly recommended that you inoculate our media in parallel.   BEI Resources growth media is based on its ability to produce robust growth.   We also try to use formulas that we know are commonly available to laboratories. Antibiotics should never be omitted from a recommended media formulation and concentrations should not be altered.
Author: BEI Resources
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Updated on: 4/15/2026 3:39:18 PM
What is a suitable vector for clone expression in Mycobacterium smegmatis?
BEI Resources provides catalog number NR-13402, Naked Plasmid pVV16 for Expression in Mycobacterium smegmatis.  Naked plasmid pVV16 contains a histidine-tag and a signal sequence and is used for expression in Mycobacterium smegmatis.
Author: BEI Resources
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Updated on: 4/15/2026 3:40:17 PM
What is your capability for developing reagents?

BEI Resources and ATCC has ISO Certified BSL-2 and BSL-3 laboratory and production facilities.   We actively acquire biological materials from the: research community, existing domestic and international collections, field collections, and clinical isolates. Materials will be produced by contract when needed and all materials provided and produced are subject to approval by NIAID.
Author: BEI Resources
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Updated on: 4/15/2026 3:32:10 PM
Showing 1 to 5 of 6 Results12

Showing 1 to 5 of 9 Results12
SARS Virus Now Available for Researchers
We have available for the first time in the BEI Resources catalog, two SARS Coronaviruses (SARS-CoV) derived from the Urbani strain. NR-18925 is produced from a recombinant infectious clone, icSARS-CoV. NR-15418 is the mouse-adapted strain, Urbani v2163, developed by Dr. Barnard as a lethal model fo ...
Author: BEI Resources
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Updated on: 12/4/2018 2:36:38 PM
Sand Flies, Reduviids and Ticks are Here!
BEI Resources announces the addition of Sand Flies, Reduviids and Ticks for the research community. Catalog Number Vector Pathogen Competence   NR-43999 Phlebotomus papatasi, PPNS, Larval Leishmania major and Sand Fly Fever phleboviruses.   NR-44000 Phlebotomus papata ...
Author: BEI Resources
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Updated on: 12/4/2018 2:32:27 PM
Development of let digital PCR for the detection of Babesia microti and Babesia duncani
Development of let digital PCR for the detection of Babesia microti and Babesia duncani Babesia spp. are obligate protozoan parasites of red blood cells. Transmission to humans occurs through bites from infected ticks or blood transfusion. Infections with B. microti account for the majority of the ...
Author: BEI Resources
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Updated on: 12/9/2014 10:58:36 AM
Mycobacterium tuberculosis Production Manuals & SOP's from Dr. Karen Dobos
Please use this link  to find a comprehensive list of  protocols and SOPs for Mycobacterium tuberculosis including: Large Scale Growth Subcellular Fractions Preparation and Fractionation of Cell Wall Proper Lipoarabinomannan (LAM) and Lipomannan (LM) Antibodies Microarrays Media Native Ma ...
Author: BEI Resources
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Updated on: 11/20/2014 11:18:21 AM
BEI Resources Fungi Catalog is Growing!
  BEI Resources is working to expand the fungal catalog so that researchers have a broader range of organisms and reagents for their work.  BEI Resources currently has eight genus and species represented with several more currently going through the production pipeline.  BEI Resources i ...
Author: BEI Resources
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Updated on: 8/29/2014 9:49:43 AM
Showing 1 to 5 of 9 Results12
The following is a list of published abstracts and papers where the work was either facilitated, or directly supported, by the BEI Resources Program.

Showing 1 to 5 of 11494 Results12345678910...>>
Cheng, W.T., et al., Infants under 24 months with severe malaria have a serological profile of active infection with Epstein Barr Virus The Journal of Infectious Diseases, 2026.
Author: BEI Resources
Updated on: 10/16/2026 11:03:13 AM
Chen, Z., et al., The 5&prime -Isobutyryl Ester Prodrug of 4&prime -Thiouridine Inhibits SARS-CoV-2 Replication in Culture and in a Syrian Hamster Infection Model. ACS Omega, 2026.
Author: BEI Resources
Updated on: 10/16/2026 11:02:37 AM
Chaudhary, P., et al., Standardized Protocol for Raising Rabbit Anti-MTB Polyclonal Antibodies using Mycobacterium tuberculosis H37Rv Soluble Extract Antigen. Indian Journal of Tuberculosis, 2026.
Author: BEI Resources
Updated on: 10/16/2026 11:02:22 AM
Chan, W.C., Targeting Endothelial Pathological Calcium Signaling Accelerates Resolution of SARS-CoV-2-Induced ARDS. 2026, University of Illinois at Chicago.
Author: BEI Resources
Updated on: 10/16/2026 11:01:51 AM
Chakraborty, B., S.M. McGee, and S. Kumar, An MKT1 domain protein is dispensable for erythrocytic stages of plasmodium falciparum. Frontiers in Microbiology, 2026. Volume 17 - 2026.
Author: BEI Resources
Updated on: 10/16/2026 11:01:35 AM
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The following is a list of published abstracts and papers where the work was either facilitated, or directly supported, by the NIH HIV Reagent Program.

Showing 1 to 5 of 1315 Results12345678910...>>

2012 Journal Citations
Author: HIV
Updated on: 3/28/2024 8:38:45 PM

2009 - 2011 Journal Citations
Author: HIV
Updated on: 3/28/2024 8:38:45 PM

2006 - 2008 Journal Citations
Author: HIV
Updated on: 3/28/2024 8:38:45 PM

2003 - 2005 Journal Citations
Author: HIV
Updated on: 3/28/2024 8:38:45 PM

2000 - 2002 Journal Citations
Author: HIV
Updated on: 3/28/2024 8:38:45 PM
Showing 1 to 5 of 1315 Results12345678910...>>


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