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  • Book
    Lora D. Delwiche and Susan J. Slaughter.
    Summary: A classic that just keeps getting better, The Little SAS Book is essential for anyone learning SAS programming. Lora Delwiche and Susan Slaughter offer a user-friendly approach so that readers can quickly and easily learn the most commonly used features of the SAS language. Each topic is presented in a self-contained, two-page layout complete with examples and graphics. Nearly every section has been revised to ensure that the sixth edition is fully up-to-date. This edition is also interface-independent, written for all SAS programmers whether they use SAS Studio, SAS Enterprise Guide, or the S.

    Contents:
    Intro; Contents; Acknowledgments; Introducing SAS Software; About This Book; About These Authors; Getting Started Using SAS Software; 1.1 The SAS Language; 1.2 SAS Data Sets; 1.3 DATA and PROC Steps; 1.4 The DATA Step's Built-in Loop; 1.5 Choosing a Method for Running SAS; 1.6 Reading the SAS Log; 1.7 Using SAS System Options; Accessing Your Data; 2.1 Methods for Getting Your Data into SAS; 2.2 SAS Data Libraries and Data Sets; 2.3 Listing the Contents of a SAS Data Set; 2.4 Reading Excel Files with the IMPORT Procedure; 2.5 Accessing Excel Files Using the XLSX LIBNAME Engine 2.6 Reading Delimited Files with the IMPORT Procedure2.7 Telling SAS Where to Find Your Raw Data; 2.8 Reading Raw Data Separated by Spaces; 2.9 Reading Raw Data Arranged in Columns; 2.10 Reading Raw Data Not in Standard Format; 2.11 Selected Informats; 2.12 Mixing Input Styles; 2.13 Reading Messy Raw Data; 2.14 Reading Multiple Lines of Raw Data per Observation; 2.15 Reading Multiple Observations per Line of Raw Data; 2.16 Reading Part of a Raw Data File; 2.17 Controlling Input with Options in the INFILE Statement; 2.18 Reading Delimited Files with the DATA Step; Working with Your Data 3.1 Using the DATA Step to Modify Data3.2 Creating and Modifying Variables; 3.3 Using SAS Functions; 3.4 Selected SAS Character Functions; 3.5 Selected SAS Numeric Functions; 3.6 Using IF-THEN and DO Statements; 3.7 Grouping Observations with IF-THEN/ELSE Statements; 3.8 Subsetting Your Data in a DATA Step; 3.9 Subsetting Your Data using PROC SQL; 3.10 Writing Multiple Data Sets Using OUTPUT Statements; 3.11 Making Several Observations from One Using OUTPUT Statements; 3.12 Using Iterative DO, DO WHILE, and DO UNTIL Statements; 3.13 Working with SAS Dates 3.14 Selected Date Informats, Functions, and Formats3.15 Using RETAIN and Sum Statements; 3.16 Simplifying Programs with Arrays; 3.17 Using Shortcuts for Lists of Variable Names; 3.18 Using Variable Names with Special Characters; Sorting, Printing, and Summarizing Your Data; 4.1 Using SAS Procedures; 4.2 Subsetting in Procedures with the WHERE Statement; 4.3 Sorting Your Data with PROC SORT; 4.4 Changing the Sort Order for Character Data; 4.5 Printing Your Data with PROC PRINT; 4.6 Changing the Appearance of Data Values with Formats; 4.7 Selected Standard Formats 4.8 Creating Your Own Formats with PROC FORMAT4.9 Writing a Report to a Text File; 4.10 Summarizing Your Data Using PROC MEANS; 4.11 Writing Summary Statistics to a SAS Data Set; 4.12 Producing One-Way Frequencies with PROC FREQ; 4.13 Producing Crosstabulations with PROC FREQ; 4.14 Grouping Data with User-Defined Formats; 4.15 Producing Tabular Reports with PROC TABULATE; 4.16 Adding Statistics to PROC TABULATE Output; 4.17 Enhancing the Appearance of PROC TABULATE Output; 4.18 Changing Headers in PROC TABULATE Output; 4.19 Producing Simple Output with PROC REPORT
    Digital Access O'Reilly 2019
  • Article
    Bartelt MA, Duncan JL.
    Infect Immun. 1978 Apr;20(1):200-8.
    The adherence of group A streptococci to epithelial cells was studied by using streptococcal strains labeled with [(3)H]uridine or fluorescein isothiocyanate. The ability of the labeled organisms to adhere to Detroit 562 epithelial cells, derived from a human pharyngeal carcinoma, as well as to epithelial cells scraped from the oral cavity was determined. Adherence to monolayer cultures or cell suspensions of Detroit cells compared favorably with adherence to suspensions of human oral epithelial cells. Initial experiments to determine the optimal conditions for adherence showed that adherence was temperature dependent and that the optimal incubation time was 15 min for adherence to epithelial cells in suspension and 30 to 60 min for monolayer cultures. Both streptococci and epithelial cells exhibited specificity in the adherence process. Different streptococcal strains varied in their ability to adhere. Adherence was also affected by the growth stage of the bacterial cultures. Trypsin treatment of the streptococci slightly decreased adherence, whereas hyaluronidase treatment increased the adherence of some strains. Streptococci were found to adhere to only about half of the epithelial cells. Those epithelial cells apparently have a limited number of receptor sites since they can be saturated by adding increasing concentrations of bacteria. Further support for limited receptor sites was provided by competition experiments. Adherence was inhibited by trypsin treatment of the epithelial cells, suggesting that proteins in the epithelial cell membrane may play a role in streptococcal adherence.
    Digital Access Access Options