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BIOTEKNOLOGI PADA MATURE HUMAN PLURIPOTENT STEM CELL KARDIOMIOSIT Puspita Sari
Medika Tadulako: Jurnal Ilmiah Kedokteran Fakultas Kedokteran Vol. 8 No. 1 (2023): Maret
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mtj.v8i1.816

Abstract

Tidak seperti sel otot, sel darah, atau sel saraf—yang biasanya tidak bereplikasi—sel punca dapat bereplikasi berkali-kali. Sel induk memiliki potensi luar biasa untuk memperbaharui diri. Mereka dapat berkembang menjadi berbagai jenis sel dalam tubuh selama awal kehidupan dan pertumbuhan. Sel induk berpotensi majemuk memiliki kemampuan untuk berdiferensiasi menjadi semua sel tubuh orang dewasa. Sel induk dewasa ditemukan dalam jaringan atau organ dan dapat berdiferensiasi untuk menghasilkan jenis sel khusus dari jaringan atau organ tersebut. Salah satu cara yang sering dilakukan untuk memperbaiki sel jantung adalah dengan penggantian sel melalui yang dibantu melalui rekayasa genetika dan pemberian biomaterial.
VIRUS ONKOGENIK DAN MEKANISME ONKOGENESIS Puspita Sari
Medika Tadulako: Jurnal Ilmiah Kedokteran Fakultas Kedokteran Vol. 8 No. 2 (2023): Oktober
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/mtj.v8i2.894

Abstract

   ABSTRAK  Virus mendorong terjadinya transformasi ganas pada sel yang merupakan langkah awal dalam proses onkogenesis kompleks. Gen dalam genom virus yang mengubah host dalam mengontrol proliferasi sel, sehingga menyebabkan sintesis protein baru dan bertanggungjawab untuk karakteristik transformasi tersebut. Onkogen dapat dikategorikan ke dalam lima kelompok dalam hal sifat biokimia dan fungsional berdasarkan protein yang dihasilkan dari protoonkogen. Kelompok ini adalah faktor pertumbuhan, reseptor faktor pertumbuhan, transduser sinyal, faktor transkripsi dan lain-lain.  ABSTRACT  Viruses promote the malignant transformation of cells which is the initial step in the complex process of oncogenesis. Genes in the viral genome that transform the host control cell proliferation, thereby causing the synthesis of new proteins, and are responsible for characterizing that transformation. Oncogenes can be categorized into five groups in terms of biochemical and functional properties based on the proteins produced from proto-oncogenes. This group comprises growth factors, growth factor receptors, signal transducers, and transcription factors. 
IMPROVING WRITING SKILL OF THE TENTH-GRADE STUDENTS OF SMA NEGERI 7 PALU BY USING CONTEXTUAL TEACHING AND LEARNING APPROACH Puspita Sari; Syahrul Munir; Maf’ulah Maf’ulah
e-Journal of ELTS (English Language Teaching Society) Vol. 12 No. 2 (2024)
Publisher : Tadulako University

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Abstract

This study is aimed at proving whether or not Contextual Teaching and Learning Approach can improve students’ writing skill in descriptive text. This study uses a quasi-experimental research design. It involves the tenth-grade students of SMA Negeri 7 Palu. In selecting the sample, the researcher uses a cluster random sampling, and the students selected as the sample were class X7 and X9. The data of this research is quantitative data. In collecting the data, it is collected through the writing test that consisted of pre-test and post-test. The data gathered is analyzed statistically to analyze the difference of students’ score in experimental and control classes. The results of the data indicates that the mean score of the experimental class (62.05) was higher than the mean score of the control class (52.25). By applying a significance level of 0.05, it is found that the t-counted (6.16) was higher than the t-table (1.67). It means that the hypothesis of the research is accepted. Based on the result, it is concluded that the use of Contextual Teaching and Learning Approach (CTL) can improve the students’ skill in writing descriptive text. The implication of the findings to the teaching of writing in the class is that the teacher needs contextual media to make the class more meaningful and real as well as make the students improve their writing.