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6 in total

1. Expression of human chorionic gonadotropin uniformly labeled with NMR isotopes in Chinese hamster ovary cells: an advance toward rapid determination of glycoprotein structures.

Authors: J W Lustbader; S Birken; S Pollak; A Pound; B T Chait; U A Mirza; S Ramnarain; R E Canfield; J M Brown
Journal: J Biomol NMR Date: 1996-06 Impact factor: 2.835

2. Carboxyterminal peptide fragments of the beta subunit are urinary products of the metabolism of desialylated human choriogonadotropin.

Authors: S Amr; C Rosa; S Birken; R Canfield; B Nisula
Journal: J Clin Invest Date: 1985-07 Impact factor: 14.808

3. Characterization of a carboxyterminal peptide fragment of the human choriogonadotropin beta-subunit excreted in the urine of a woman with choriocarcinoma.

Authors: S Amr; R E Wehmann; S Birken; R E Canfield; B C Nisula
Journal: J Clin Invest Date: 1983-02 Impact factor: 14.808

4. Expression of human choriogonadotropin-like material in coagulase-negative Staphylococcus species.

Authors: H F Acevedo; E Campbell-Acevedo; W E Kloos
Journal: Infect Immun Date: 1985-12 Impact factor: 3.441

5. Helix formation in reduced, S-carboxymethylated human choriogonadotropin beta subunit and tryptic peptides.

Authors: D Puett; S Birken
Journal: J Protein Chem Date: 1989-12

Review 6. Development of an assay for a biomarker of pregnancy and early fetal loss.

Authors: R E Canfield; J F O'Connor; S Birken; A Krichevsky; A J Wilcox
Journal: Environ Health Perspect Date: 1987-10 Impact factor: 9.031

6 in total