Le Roux, K., Hussein, A., & Lall, N. (2011). In vitro chemo-preventative activity of Crotalaria agatiflora subspecies agatiflora Schweinf. Journal Of Ethnopharmacology, 138(3), 748 - 755. http://doi.org/10.1016/j.jep.2011.10.011 (Original work published 12/2011AD)

Jeyaseelan,, & Jashothan,. (2012). In vitro control of Staphylococcus aureus (NCTC 6571) and Escherichia coli (ATCC 25922) by Ricinus communis L. Asian Pacific Journal Of Tropical Biomedicine, 2(9). http://doi.org/10.1016/S2221-1691(12)60216-0 (Original work published 9/2012AD)

Simpson,, Wandji,, Magne Nde,, Njamen,, Tanee Fomum,, Clyne,, & Vollmer,. (2012). In vitro estrogenic activity of two major compounds from the stem bark of Erythrina lysistemon (Fabaceae). European Journal Of Pharmacology, 674(2-3). http://doi.org/10.1016/j.ejphar.2011.10.031 (Original work published 01/2012AD)

Geetha,, Anitha, R., & Lakshmi,. (2012). In vitro evaluation of anti bacterial activity of leaf extract of Agathosma betulina on urinary tract pathogens. International Journal Of Pharmaceutical Sciences Review And Research, 14(2 ), 94 ‐ 97. Retrieved from http://globalresearchonline.net/journalcontents/v14-2/15.pdf (Original work published May – June 2012)

Tai, J., Cheung, S., Chan, E., & Hasman, D. (2004). In vitro culture studies of Sutherlandia frutescens on human tumor cell lines. Journal Of Ethnopharmacology, 93(1). (Original work published 7/2004AD)

Finnie,, Van Staden,, Stafford,, Ndhlala,, Anthonissen,, & Verschaeve,. (2010). In vitro cytotoxic and mutagenic evaluation of thirteen commercial herbal mixtures sold in KwaZulu-Natal, South Africa. South African Journal Of Botany, 76(1), 132 - 138. http://doi.org/10.1016/j.sajb.2009.09.010 (Original work published 1/2010AD)

Adebayo, S., Ndzoyem, J. -P., Shai, J., Gulumain, M., & Eloff, K. (2014). In vitro cytotoxic effects, antioxidant capacity and phytochemical evaluations of extracts of Clausena anisata, Peltophorum africanuum and Zanthoxylum capense. Toxicology Letters, 229. http://doi.org/10.1016/j.toxlet.2014.06.718 (Original work published 09/2014AD)

Meyer,, Rakuambo,, Hussein,, Huyser,, Mdlalose,, & Raidani,. (2006). In vitro effect of medicinal plants used to treat erectile dysfunction on smooth muscle relaxation and human sperm. Journal Of Ethnopharmacology, 105(1-2). http://doi.org/http://dx.doi.org/10.1016/j.jep.2005.10.008 (Original work published 4/2006AD)

Van Vuuren,, Viljoen,, Kamatou,, & Van Zyl,. (2006). In vitro evidence of antimicrobial synergy between Salvia chamelaeagnea and Leonotis leonurus. South African Journal Of Botany, 72(4), 634 - 636. http://doi.org/10.1016/j.sajb.2006.03.011 (Original work published 11/2006AD)

Albrecht, C., Joubert, A., Stander, A., Marais, S., Stivaktas, V., Vorster, C., & Lottering, M. -L. (2009). In vitro effects of Sutherlandia frutescens water extracts on cell numbers, morphology, cell cycle progression and cell death in a tumorigenic and a non-tumorigenic epithelial breast cell line. Journal Of Ethnopharmacology, 124(1). http://doi.org/10.1016/j.jep.2009.04.013 (Original work published 07/2009AD)

Kolodziej, H., & Kiderlen, A. (2007). In vitro evaluation of antibacterial and immunomodulatory activities of Pelargonium reniforme, Pelargonium sidoides and the related herbal drug preparation EPs® 7630. Phytomedicine, 14. http://doi.org/10.1016/j.phymed.2006.11.020 (Original work published 3/2007AD)

Lall,, Tshikalange,, Meyer,, & Mahapatra,. (2007). In vitro HIV-1 reverse transcriptase inhibitory activity of naphthoquinones and derivatives from Euclea natalensis. South African Journal Of Botany, 73(2). http://doi.org/10.1016/j.sajb.2007.02.200 (Original work published 4/2007AD)

Van Vuuren,, & Viljoen,. (2008). In vitro evidence of phyto-synergy for plant part combinations of Croton gratissimus (Euphorbiaceae) used in African traditional healing. Journal Of Ethnopharmacology, 119 (3), 700-704. (Original work published 2008)

Van Vuuren,, & Viljoen,. (2008). In vitro evidence of phyto-synergy for plant part combinations of Croton gratissimus(Euphorbiaceae) used in African traditional healing. Journal Of Ethnopharmacology, 119(3). (Original work published 10/2008AD)

Haddad, M., Lelamer, A. -C., Banuls, L. M., Vasquez, P., Carraz, M., Vaisberg, A., et al. (2013). In vitro growth inhibitory effects of 13,28-epoxyoleanane triterpene saponins in cancer cells. Phytochemistry Letters, 6(1). http://doi.org/10.1016/j.phytol.2012.11.011 (Original work published 2/2013AD)