Abstract:
:The full length spike (S) gene of porcine respiratory coronavirus (PRCV) was inserted into the genome of human adenovirus type 5 downstream of the early transcription region 3 promoter. The recombinant virus replicated in cultures of the swine testicle ST cell line and directed the synthesis of S antigen to an amount of approximately 33 micrograms per 10(6) cells, as determined by ELISA. The antigen was cell-associated except in the late phase of the infection, when a low amount (4 micrograms per 10(6) cells) was released in the culture supernatant. The cell-associated antigen consisted of 2 polypeptides of 160 K and 175 K, respectively. The 160 K polypeptide comigrated with the authentic S' precursor from PRCV-infected cells. The 175 K polypeptide had the same mobility as the authentic mature S protein from PRCV-infected cells and from PRCV released in the supernatant. The extracellular recombinant antigen corresponded with the 175 K mature protein. Immunofluorescent staining gave evidence that some recombinant S protein was exposed on the cell surface; it also showed that the protein was recognized by conformation-specific anti-S monoclonal antibodies. Piglets, immunized oronasally with the recombinant adenovirus vector developed PRCV-neutralizing serum antibodies and were partially protected against PRCV-challenge.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Callebaut P,Pensaert Mdoi
10.1007/978-1-4615-1899-0_42subject
Has Abstractpub_date
1995-01-01 00:00:00pages
265-70eissn
0065-2598issn
2214-8019journal_volume
380pub_type
杂志文章abstract::Gyrate atrophy is an autosomal recessive dystrophy in which night blindness starts early in the first decade of life. In the early stages, large areas of retinal pigment epithelium (RPE) and choriocapillaris (CC) atrophy in the far periphery (lobular shape, Fig. 37.1). (In choroideremia, atrophy appears in the mid per...
journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
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更新日期:2008-01-01 00:00:00
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
doi:10.1007/978-1-4615-9278-5_12
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
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journal_title:Advances in experimental medicine and biology
pub_type: 杂志文章,评审
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journal_title:Advances in experimental medicine and biology
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