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Prognostic significance of proliferative and apoptotic markers in oral tongue squamous cell carcinomas.
Xie X, De Angelis P, Clausen OP, Boysen M. Xie X, et al. Among authors: clausen op. Oral Oncol. 1999 Sep;35(5):502-9. doi: 10.1016/s1368-8375(99)00024-x. Oral Oncol. 1999. PMID: 10694951
A study of phosphorylated ERK1/2 and COX-2 in early stage (T1-T2) oral squamous cell carcinomas.
Søland TM, Husvik C, Koppang HS, Boysen M, Sandvik L, Clausen OP, Christoffersen T, Bryne M. Søland TM, et al. Among authors: clausen op. J Oral Pathol Med. 2008 Oct;37(9):535-42. doi: 10.1111/j.1600-0714.2008.00656.x. Epub 2008 Feb 17. J Oral Pathol Med. 2008. PMID: 18284542
[Flow cytometry--use in cell biology and benefits in clinical medicine].
Clausen OP, Olsen G, Tjønnfjord GE. Clausen OP, et al. Tidsskr Nor Laegeforen. 2000 Feb 10;120(4):489-95. Tidsskr Nor Laegeforen. 2000. PMID: 10833942 Review. Norwegian.
Prognostic significance of recurrent chromosomal aberrations detected by comparative genomic hybridization in sporadic colorectal cancer.
De Angelis PM, Stokke T, Beigi M, Mjåland O, Clausen OP. De Angelis PM, et al. Among authors: clausen op. Int J Colorectal Dis. 2001 Feb;16(1):38-45. doi: 10.1007/s003840000275. Int J Colorectal Dis. 2001. PMID: 11317696
Nucleolar organizer regions and prognosis in glottic squamous cell carcinoma.
Xie X, Stenersen TC, Clausen OP, Boysen M. Xie X, et al. Among authors: clausen op. Head Neck. 1997 Jan;19(1):20-6. doi: 10.1002/(sici)1097-0347(199701)19:1<20::aid-hed4>3.0.co;2-x. Head Neck. 1997. PMID: 9030940
DNA content in adenoid cystic carcinomas.
Franzén G, Nordgård S, Boysen M, Larsen PL, Halvorsen TB, Clausen OP. Franzén G, et al. Among authors: clausen op. Head Neck. 1995 Jan-Feb;17(1):49-55. doi: 10.1002/hed.2880170111. Head Neck. 1995. PMID: 7883549
DNA flow cytometry of reclassified subtypes of malignant salivary gland tumors.
Bang G, Donath K, Thoresen S, Clausen OP. Bang G, et al. Among authors: clausen op. J Oral Pathol Med. 1994 Aug;23(7):291-7. doi: 10.1111/j.1600-0714.1994.tb00064.x. J Oral Pathol Med. 1994. PMID: 7965883
Differences in sialyl-Tn antigen expression between keratoacanthomas and cutaneous squamous cell carcinomas.
Jensen P, Clausen OP, Bryne M. Jensen P, et al. Among authors: clausen op. J Cutan Pathol. 1999 Apr;26(4):183-9. doi: 10.1111/j.1600-0560.1999.tb01826.x. J Cutan Pathol. 1999. PMID: 10335895
Differential effects of topical retinoic acid application on keratin K1 and filaggrin expression in mouse epidermis.
Lützow-Holm C, Heyden A, Huitfeldt HS, Brandtzaeg P, Clausen OP. Lützow-Holm C, et al. Among authors: clausen op. Differentiation. 1994 Sep;57(3):179-85. doi: 10.1046/j.1432-0436.1994.5730179.x. Differentiation. 1994. PMID: 7527354
Ki-67: a useful marker for the evaluation of dysplasia in ulcerative colitis.
Andersen SN, Rognum TO, Bakka A, Clausen OP. Andersen SN, et al. Among authors: clausen op. Mol Pathol. 1998 Dec;51(6):327-32. doi: 10.1136/mp.51.6.327. Mol Pathol. 1998. PMID: 10193513 Free PMC article.
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